Signature Series 0W-30 100% Synthetic Motor Oil (AZO)
 0W-30 Signature Series (AZO), 100% Synthetic 0W30 Motor Oil

The Top Tier of AMSOIL Synthetic Motor Oil. AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. Engineered for enthusiasts seeking maximum protection and performance. Precision-formulated with cutting-edge technology and a longstanding devotion to making the world's best motor oil. The result: engine protection that blows the doors off the highest industry standards.

• 50% more cleaning power vs. AMSOIL OE Motor Oil
• Ideal for turbos & direct injection
• Guaranteed protection for up to 25,000 miles or 1 year

Package sizes include:

Quart Bottle
Gallon Bottle
30-Gallon Drum
55-Gallon Drum

Product Code: azo • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & RatingRelated Videos

Product Applications
AMSOIL Signature Series Synthetic Motor Oil is excellent for use in all types of gasoline-fueled vehicles. It is recommended for all domestic and foreign vehicles requiring any of the listed performance specifications:

Product Application Specs

• API SN (Resource Conserving), SM
• ILSAC GF-5, GF-4
• ACEA A5/B5, A1/B1
• Chrysler MS-6395
• GM dexos1 Gen 2 (supersedes LL-A-025, 6094M and 4718M) - Fortified with detergents that exceed the dexos1 Gen 2 sulfated ash specification.

Product Description
AMSOIL Signature Series Synthetic Motor Oil delivers extraordinary lubrication in all types of automotive gasoline engines. By combining industry-premier synthetic technology with AMSOIL premium additives, Signature Series Synthetic Motor Oil exceeds the higher performance demands of modern engines. It withstands the stress of higher horsepower, higher heat and complicated emissions control systems. Signature Series Synthetic Motor Oil is engineered to outperform competitive conventional and synthetic motor oils. It delivers long-lasting performance and protection.

AMSOIL, the leader in automotive synthetic lubrication, produced the World's first API-qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL, the First in Synthetics®, to do the best job protecting your engine.

Protects Against Engine Wear
AMSOIL Signature Series Synthetic Motor Oil develops a strong fluid film that keeps metal surfaces separated while its robust anti-wear additives further reduce wear in metal-to-metal contact regions for maximum engine life. The Sequence IVA Engine Test, which must be passed to meet the industry-standard API SN specification, simulates extended periods of stop-and-go driving.

For 100 hours, the test engine cycles between 50 minutes of idling and 10 minutes of elevated rpm - conditions that encourage engine wear. The camshaft is then measured for wear in 84 locations and an average score is determined. We used Signature Series 0W-20, the lightest viscosity in the line, to further increase the severity of the test. AMSOIL Signature Series Synthetic Motor Oil provided 75 percent more engine protection against horsepower loss and wear* than required by the industry standard, extending the life of vital components like pistons and cams.

Cam Lobes Wear Test - AMSOIL SS reduces cam wear
sequence IVA engine test results
*Based on independent testing of AMSOIL Signature Series 0W-20, in ASTM D6891 as required by the API SN specification.

Protects Pistons from Low-Speed Pre-Ignition (LSPI)
We armed Signature Series with an advanced detergent system that protects against harmful deposits and low-speed pre-ignition (LSPI). Most new engines feature gasoline direct injection (GDI), often combined with a turbocharger to boost power and improve fuel economy. These new technologies, when combined with a poorly formulated motor oil, promote LSPI and threaten engine operation. LSPI is the spontaneous ignition of the fuel/air mixture prior to spark-triggered ignition. It occurs in today's advanced engines and is much more destructive than typical pre-ignition.

Original equipment manufacturers (OEMs) like GM* have addressed the issue by designing tests to determine a motor oil's ability to prevent LSPI. The GM test allows up to five LSPI events to receive a passing score. Signature Series Synthetic Motor Oil provided 100 percent protection against LSPI* - zero occurrences were recorded.

LSPI piston damage when competitors motor oil is used

Protects Turbochargers
Our unique synthetic formulation is inherently stable to resist oxidation and neutralize acids. Signature Series Motor Oil provides outstanding protection against deposits common to high-temperature engine environments. The tremendous heat and stress turbos create can cause some oils to break down and form harmful bearing deposits through a process known as turbo coking. Over time, turbos can suffer reduced performance or fail altogether.

We challenged Signature Series to the GM Turbo Coking Test, which consists of 2000 cycles of extreme heat soaks. An oil must limit the temperature change within the turbocharger to 13 percent or less to pass the test. Signature Series limited the temperature increase to only 3.6 percent, protecting the turbocharger 72 percent better than required* by the GM dexos1® Gen 2 specification.

amsoil turbo bearing shaft protection

Extends Drains: Protection Guaranteed
AMSOIL Signature Series 25,000 miles drain interval technologyAMSOIL Signature Series Synthetic Motor Oil provides reserve protection, allowing you to go longer between oil changes if you choose up to 25,000 miles, 700 hours of operation or one year, whichever comes first*. Our unique synthetic formulation and long-drain additive system are inherently stable to resist oxidation and neutralize acids over longer periods. Signature Series is designed to deliver outstanding engine protection, cleanliness and performance over extended drain intervals - guaranteed. It provides peace of mind so you can fit oil changes into your schedule.

Oil Filter:

Any brand of oil filter may be used with Signature Series Synthetic Motor Oil. For maximum convenience, however, use an AMSOIL Ea® Oil Filter. Made of fully synthetic media with greater filtering efficiency and dirt-holding capacity than conventional filters, Ea Oil Filters are recommended for 25,000 miles/12 months or 15,000 miles/12 months, depending on application, which coincides with Signature Series' once-a-year drain interval. While Signature Series' 12-month service life remains intact if a non-Ea Oil Filter is used, the filter must be changed according to its manufacturer's recommendations.

Trusted by Professional Engine Builders

Engine Masters ChallengeDedicated engine builders and mechanics put in long hours honing their craft. These architects of powerful, high-performance engines turn to Signature Series to protect their passion.

"When we use AMSOIL, I don't worry about a film breakdown or an oil breakdown - and the oil pressure is always consistent. We've tested oils back-to-back on the dyno in our shop and we're always able to make more power with AMSOIL."

-Brett Bowers, Engine Masters Competitor and Professional Engine Builder

Maximum Cleaning Power to Battle Sludge

AMSOIL Signature Series offers Maximum Cleaning Power to Battle SludgeAMSOIL Signature Series Synthetic Motor Oil has 50 percent more detergents* to help keep oil passages clean and promote oil circulation.

Engine failures due to sludge are often caused by a plugged oil pick-up tube screen - the motor is effectively starved of oil. The Sequence VG Engine Test measures an oil's ability to prevent sludge. During the test, a Ford 4.6L engine is subjected to sludge-inducing conditions for 216 hours. The industry standard allows for 10 percent blockage before the motor oil fails the test. Signature Series produced a screen virtually free from sludge (see image). Its detergent and dispersant additives are so effective, Signature Series provides 90 percent better protection against sludge.

• *Based on independent testing of AMSOIL Signature Series 5w-30 motor oil, in the LSPI engine test as required for the GM dexos 1® Gen 2 specification.
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the GM turbo coking test.
• *vs. AMSOIL OE Motor Oil
• *Based on independent testing of AMSOIL Signature Series 5W-30 in the ASTM D6593 engine test for oil screen plugging as required by the API SN specification.
* All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

Preserves Horsepower
The extreme durability of Signature Series Motor Oil ensures your engine runs stronger, for longer. We installed Signature Series 5W-30 Synthetic Motor Oil in a Ford* F-150 with a new 3.5L Ecoboost engine to test its ability to protect turbocharged direct-injection (TDGI) engines from torque and horsepower loss during extended drain intervals up to 25,000 miles. Power sweeps were done at the beginning and end of the test to evaluate horsepower and torque retention. As the graph shows, Signature Series helped maintain engine performance throughout the 100,000 mile test.

horsepower degradation test results

Limits Oil Consumption
Signature Series has a uniform molecular structure that limits evaporation and keeps it where it's needed most - protecting your engine. Volatility (burn-off) occurs when oil gets hot, causing lighter molecules to burn off or evaporate. This leads to oil thickening, additive imbalance, higher emissions and oil consumption. The NOACK Volatility test is the industry standard for evaluating motor oil high temperature evaporation. It measures the percentage of burn-off after a motor oil is placed under constant airflow at 482°F for 1 hour. A lower number indicates a better resistance to evaporation. Signature Series falls far below the API limit for volatility, reducing the need for frequent oil top-offs and limiting vehicle emissions.

noack volatility test results

Easier Cold-Starts
Signature Series Synthetic Motor Oil does not contain paraffins (wax) and stays fluid in temperatures of -58°F and lower. Extreme cold causes other motor oils to thicken, starving vital moving parts of lubrication, accelerating wear and even preventing vehicles from starting. Signature Series provides 66 percent better cold-temperature performance for easier starting, better fuel economy, improved oil flow (as seen below) and reduced wear.

pour point test results

Maintains Protective Viscosity
We formulated Signature Series with superior thermal durability that resists breakdown better than conventional and synthetic motor oils. The Sequence IIIH Test uses the Chrysler 3.6L Pentastar engine to evaluate a motor oil's ability to resist the damaging effects of heat. The test is conducted with oil temperatures of 304°F, 100°F hotter than normal operation, to accelerate oil thickening and deposits. Despite the extreme conditions, Signature Series kept pistons clean and held thickening to only 6 percent, a minimal amount compared to the proposed specification limit of 150 percent*. This stay-in-grade performance helps maintain maximum power and fuel economy while also ensuring advanced technologies like variable valve timing (VVT) operate as designed throughout the entire drain interval.

sequence III-H test results

• *Based on proposed ILSAC GF-5 Plus specification.
*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use. All products advertised here are developed by AMSOIL for use in the applications shown.

SERVICE LIFE
Normal Service: Up to 25,000 miles, 700 hours of operation or one year, whichever comes first, in personal vehicles not operat-ing under severe service.

Severe Service: Up to 15,000 miles, 700 hours of operation or one year, whichever comes first. Severe service conditions include commercial or fleet vehicles; excessive idling; or frequenttowing, hauling, plowing or driving in dusty conditions.
• Modified engines (non-stock), racing vehicles and vehicles using alternative fuels (E85, CNG, propane, etc.) are excluded from extended drain interval recommendations.
• Change at the vehicle manufacturer’s recommended drain interval outside U.S. and Canada.
• AMSOIL Ea® Full-Flow Oil Filters are designed for extended drain intervals. Do not exceed 12,000 miles or one year with other brand filters unless longer intervals are recommended by the vehicle manufacturer. Always change filter when changing oil.
• Check oil regularly to maintain proper fill levels.

AMSOIL Ea Full-Flow Oil Filters stop smaller particles, flow more oil and last longer than regular filters. For best performance, use AMSOIL Ea Full-Flow Oil Filters.

COMPATIBILITY

AMSOIL Signature Series Synthetic Motor Oil is compatiblewith other conventional and synthetic motor oils. Mixing other oils with AMSOIL motor oils, however, will shorten the oil’s life expectancy and reduce its performance benefits. AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL synthetic motor oils.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS).

Click here to view the MSDS Data Sheet for AMSOIL azo.

Keep out of the reach of children. Don't pollute. Return used oil to collection centers.

TYPICAL TECHNICAL PROPERTIES
Signature Series 100% Synthetic 0W-30 Motor Oil (AZO)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445)10.4
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)57.1
Viscosity Index (ASTM D-2270)173
CCS Viscosity, cP @ (°C) (ASTM D-5293)5372 (-35)
Flash Point °C (°F) (ASTM D-92)220 (428)
Fire Point °C (°F) (ASTM D-92)238 (460)
Pour Point °C (°F) (ASTM D-97)-50 (-58)
NOACK Volatility, % weight loss (g/100g) (ASTM D-5800)8.8
High Temperature/High Shear Viscosity
@ 150°C, 1.0 X 106 s.-1), cP (ASTM D-5481)
3.07
Total Base Number (ASTM D-2896)12.5

LSPI Super Knock Prevention

Sequence IIIG Engine Test + Motor Oil Comparison

Cold Flow Pour Test AMSOIL vs Conventional Motor Oil

Did this product meet your expectations?

(click on a star to rate)
Product Name: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)
Current Rating: 5 out of 5 stars
Total Votes: 90 vote(s)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by GF1563: space

Great product, well worth the money

Love the extended oil change intervals and my fuel mileage increased slightly, which leads me to believe it must be lubricating everything very well.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pat: space

This is the only oil I will put in my engine

It's great year round hot or cold

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Don: space

Will Always use Amsoil

Several years ago I switched to Amsoil in my GMC Yukon. I was very impressed with what the Signature Series 5w-30 Motor Oil looked like after the first oil change. With all the oils and products that Amsoil offers, I have since switched everything I own over to Amsoil. Even my lawnmowers.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by dhgguy: space

I can recommend this product

Used in my F150 exclusively. Excellent oil & filter.
Would not use anything else.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ronv: space

Great product!

I have used Amsoil for 30 years and wouldn't think of using any other oil.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mister nice: space

Yes

Love that you don't have to change oil as offer as regular oil. Is is a little high. Hey but you get what you pay for.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Henry: space

Good stuff

I use Amsoil exclusively

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jblev77: space

The best synthetic oil

#1 for 3.5L ecoboost

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

This is the only oil I run in my Silverado Cobalt, and GTO

I like being about to change oil at any time between 5-10k and not have to worry about weather or not the oil is doing it job !!!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by RebelnOhio: space

Amsoil always works!

I have been using Amsoil for over 15 years and have never had a problem, it's a well proven product that I trust in all of my cars for work and for pleasure. I will will continue to use Amsoil and benefit from it's proven results! I own a Livery/Limo Service and I drive about 40-50K miles a year on various cars and I believe Amsoil is the best Oil for all of my vehicles. With the long 15k Mile change intervals it is a money saving gem and your engine benefits 100%. I recommend there products highly!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KENT: space

SIGNATURE SERIES SYNTHETIC MOTOR OIL

I've used this brand and series in my Dodge Ram 4.7 v-8 since I acquired it at 90,000 miles. I've driven another 70,000 miles since and the engine is stronger than it's ever been! I expect to drive this truck until at least 300K miles because of the Amsoil Signagture Series Synthetic brand motor oil. I won't use anything else!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by KK: space

Great Stuff

I use Amsoil on my SUV and love it!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tom: space

Great Oil

I use ansoil on all of my trucks, motorcycles, ATVs. This oil I use on 2017 Hemi 2500. It cannot be beat.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by G: space

I love it

Instant satisfaction, after the first start up i could already hear and feel things running smoother.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Redtundra8: space

Great Oil

This is the best oil money can buy in my opinion. I use this in all my vehicles and have for the last 12 years. Love only having to change the oil once a year. I highly recommend this product.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pat: space

Best line out there

Bestboil products on the market by far. I run it in all my vehicles

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Billy G: space

No issues

I have used Amsoil products for many years in all of my vehicles and small engines. I have never had an issues. I recommend Amsoil even though it is not the cheapest but the delivery is very prompt.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Wingsprnt: space

Does what it promises.

Not sure about the oW-20 weight here in Florida, but that is what Honda calls for.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Greg: space

Good product

Always met my expectations.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by MatsB: space

Excellent products.

Using Amsoil in all of my family's cars. Using Signature series in cars that drive over 12,000 miles per year, and XL series in cars that drive less than 12,000 miles.
Sent a 27,000 mile sample for testing to a independent lab, and they recommended 30,000 miles next time based on the excellent results.
Also using Amsoil in all lawn equipment and for a standby generator.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert Long: space

I would definitely buy this product again

Great product gives better fuel mileage and cleaner oil after changes

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

The Best There Is

I've been using Amsoil since the 1980s in everything with an engine. And have bragged about it's benefits to anyone who'd listen.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Increase mileage

I get better mileage with Amsoil
I run my 4x4 very hard and Amsoil is doing a great job of keeping it running strong

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Elvis of Aragorn: space

Great results

My 2004 Silverado (5.3L V8) has had a steady diet of Amsoil since its second oil change. I have stuck to the 10,000 mile interval, using Amsoil Ea filters & Signature Oil. She's about to roll over the 200,000 mile mark, and I have had no engine issues. I use Amsoil Signature Synthetic Oil in all of my vehicles, and plan on keeping it that way.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pinto: space

great in the city

I'm city driving in a 4x4 Ford van and after my last oil change the oil was still in great condition after 15,000 miles. just used the cleaning solution so lets see how this improves engine longevity. really happy with all th products I have received.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by S2kadi: space

The Only Oil I Trust

I use Amsoil Signature Series in both of my cars that are susceptible to burning oil. The 10W30 goes into my Honda S2000 and works great! Amsoil is the only oil I use in my motors and gearboxes, after trying out several different brands, I have found their quality to be of the best.

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by pro4100: space

Top Notch

I use it in my Subie Forester and my silverado 1500. no problems ever!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Quick charge water: space

Best stuff on the market

Yeah like to 25,000 my old changed

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Beast: space

10K Oil Changes

I will never use conventional again. 10K mile Oil changes, or once a year. You cant beat the quality and value of this product. No dealer or mechanic can ever persuade my to change every 3k miles again!. Get you some!

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ScoobyVTEC: space

Improved MPG

Bought Amsoil for all of my cars so I wouldn't have to change the oil so frequently and for the protection it gives all of the internal moving parts. I've noticed an increase in MPG and smoothness when I drive.
2017 Civic Type R
2012 Pilot Touring AWD
1998 Civic EX

Item Reviewed: Signature Series Motor Oils

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chuck: space

Great product

I have used Amsoil for 25 years in all my vehicles. I change my oil and filter once a year, which is about 15000 miles. It is a time and money saver.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Garry: space

030 Oil

Have used AMSOIL for 2003 SVT Focus and 2011 Saab 9 3. Focus has 336,000 miles and Saab has 115,000.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lungbuster: space

I have used this product for 10 yrs

I use this in my 2001 f150. I currently am at 246,000 miles and it is still a strong motor and have not broke down this motor yet for internal work or repairs.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JJ: space

Superior oil

1995 Ford F 150 280000 mi
2005 Ford Escape 190000 mi both show no decrease in power.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan the Nan: space

Excellent Oil

I have used Amsoil since 1980 in all my cars and small engines. All have worked like new and nothing I own using Amsoul has ever had an engine related issue to to excessive wear or reliability.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jeff: space

Great Oil.

I have used this oil for 4 years now in my 2005 F150. Each December I change the oil myself and send samples to Blackstone Labs for analysis. Each time it has come back, saying I can extend my oil changes another 5K+ miles because the TBN is great. Has always been over 2. The most I have driven in any 1 year period before changing oil was 14K miles. I'm impressed.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JCS: space

I will continue to use for life!

I will be using this in my 2017 Chevy Silverado 4x4 for as long as I own it! Great product!

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rick: space

Nothing but AMSOIL

Started using over fifteen years ago. First in my motorhome. Was told it could increase my MPG. It did by 2 miles to the gallon. In a motor home that's a lot. I have been using it ever since in anything that burns fuel. Love all their products.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by david: space

Amsoil is great

Use amsoil on my ecoboost Never had a problem with timing chain and used it on my wife's 2008 ford explorer with the 4.0 no engine problems and it has 200,000 miles

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mark: space

The oil to use

Have used Amsoil Signature Series for a decade now.
Last oil report stated the engine at 76000 miles is "ageing like a fine wine".
Also use the 2 cycle oil & it's great!

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Butch: space

I've used this product for the last ten years!

I have been using 0W-30 Amsoil Signature Series since about 36,000 mlies on my 2007 F150 along with Amsoil oil filter. 281,000 miles and still running great. Excellent power and good fuel mileage. Of course I also do the other routine maintenance as well. People can't believe how quite it runs and still has good power. Amsoil is fantastic.. Engine still good and tight, no oil leaks!

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Matt: space

Good stuff

Amsoil products are the best.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by dhg-guy: space

Will continue to buy this product

Used in my f150 ecoboost engine, makes it run smooth, cool, quiet.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ConBro: space

Great for Subaru's

Use this in the wife's Subaru Legacy. Used 44k exclusively and the UOA's are perfect every time. Can't recommend enough.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jon: space

Great oil

I've had great results with Amsoil both on track and on the street. Love them.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brayden: space

Low Milage Yearly User

The recommended Dexos1 oil for my turbocharger car is 5W30. Amsoil is one of the few (only) companies who offer a high quality 0W30 that is Dexos1 certified. Disclaimer, I have no interest in using 'house brand' for my car. Personally I believe aftermarket manufacturers like Amsoil have more incentive to keep my vehicle lasting longer. I have the luxury of not having to drive my car to work, so the annual mileage is well below average. My car also sits for weeks on end and having the lighter oil helps to quickly lubricant my engine when I start it for the first time. I change the oil once a year instead of the kilometres. Choosing the lighter oil increased fuel economy in the summer and allowed easy starting in the winter on those -35°C days (no block heater). In the winter I enjoy skiing in the mountains so I need an oil that stays fluid in extreme cold. On a hot summer day in stop/go traffic I feel confident running the lighter 0W30 oil in my car knowing that my engine is protected. Overall great product and will continue to use 0W30 Signature Series for years to come.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by JK: space

I would buy this product again

Use in a 14 year old truck, no tapping when truck is started after sitting for days

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Scott L Rising: space

Oil

Great oil wish it were a little cheaper

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mt: space

Great

works great

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chuck: space

Great oil

Have used Amsoil for the past 15 years. During that time, it has never let me down. Early on, I had oil analysis done and the oil held up extremely well going over 20,000 real miles and still had life left.
You can't ask more then that especially in a dusty environment.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pat: space

Excellent

oil changes

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Voo: space

Best product on the market as far as lubrcation.

I use amsoil on all my cars weather it is brake fluid, trans. power steering and anti freeze.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Florin: space

AMS and nothing else

If you look for quality, performance, fuel economy and peace of mind, don't bother to look elsewhere.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by DENNIS THE ELECTRICIAN: space

FOREVER YOUNG

I FIRST DISCOVERED AMZOIL IN 1973 AS I HAD A COUSIN WHO WAS A DEALER. BUT AT THE TIME I WAS A 3000 MILE AVID OIL CHANGER FOR 30 YEARS THEN I REDISCOVERED AMZOIL PRODUCTS AS I WAS TIRED OF CHANGING OIL ONCE A MONTH OR SOINER AS I PUT ON 50,000MILES A YEAR COMMUTING SO IN 2003;I SAID WHY NOT MADE THE SWITCH TO AMZOIL AS I HAD RETIRED AND NO LONGER WAS PUTTING ALOT OF MILES ON A CAR. SO NOW I CHANGE OIL AND FILTER ONCE A YEAR OR EVERY 12,000 MILES I KNOW SINCE USING SIGNATURE SERIES I COULD JUST CHANGE OIL FILTER AND CONTINUE TO 25,000 BUT THE THOUGHT OF ADDING ONE QUART OF NEW OIL TO 6 QUARTS DIRTY OIL I AM STILL NOT SOLD ON THAT. MY ONLY REGRET IS I DIDNT USE IT 30 YEARS AGO WHEN I WAS. COMMUTTING. ALSO USE FUEL ADDITIVES QUICK SHOT , BOOST RADIATOR ADDITIVE AND THEIR EA OIL FILTERS ALL QUALITY PRODUCTS

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BL: space

Amsoil all the way!

I use 0-30 in both of my Honda autos. I switch to 0-30 in the summer and 0-20 in the winter. I have 50k mi on the motor in my Ridgeline and it runs just as good as when I bought it.

I would not use any thing else.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mike: space

great product, i trust this oil

only oil I use in my cars and motorcycles.........

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Turtle Man: space

GREAT OIL OF THE 30 VISCOSITY RANGE

The AMSOIL package included in this oil is great. When uses as directed, it provides the longevity and dependability surpassing the temperature range of use compared to 5w-30 and 10w-30 engine oils. Use of this in both vehicles for many years, truck and car, that require a 5w-30 engine oil. Thanks again.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joe: space

Your car is worth big bucks

your car was expensive
don't scrimp on the oil
amsoil oil and filters

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by squire: space

Best oil ever!!!

I've been using Amsoil for years. I really like using the signature series 0-30 in my engines for quick starting in frigid weather!

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Voo: space

I Buy nothing but Amsoil products

Like my title everything that goes into both my cars is amsoil products oil-brake-trans-power steering etc.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Pa: space

Signature Series 0W-30 AZO Versatility

Using Signature Series 0W-30 AZO keeps my ordering simple. At one time I was using 5W-30, 10W-30, 10W-40, 5W-40 European Amsoil products. There was a time in the past years that the "Look Up A Vehicle" applications commonly listed the AZO as the first listed oil as the top recommendation. After comparing specs I concluded that the vehicles using the 40 weight products didn't really need that viscosity per the owners manual and the other 30 weight oils could all be well serviced by the 0W-30 Signature Series. It is a great product and I use it in all the vehicles I own and the family vehicles I service.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gio: space

I always buy nothing but amsoil

I've been useing amsoil oils for 20 years I wouldn't use another brand if I was stuck out of oil somewhere

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Harry: space

0W-30 SIGNATURE SERIES OIL IS AWESOME!

I highly recommend the AZO 0W-30 Signature Series oil. I have been using it since it came out and the 0w-30 SSO oil before that. This top of the line oil has kept my car running young, now at 449,000 miles.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tony: space

Gatortail

My order arrived on time and un-damaged. I use Amsoil in my Gatortail engine (Briggs) replacing the oil at 25-35 hours with a total of 550 hours on the engine. The oil holds up very well. When conducting maintenance on the engine the interior working parts of the engine are like new with absolutely no visible signs of sludge build up. I highly recommend the use of Amsoil products. I also use the Amsoil Marine Grease in the lower unit and that product holds up very well as well.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Andrew: space

Good stuff

I love Amsoil products. I run this in a 1993 Ford Ranger. With 245k on the motor it still works good and plan on running it for a while. No tapping on start up like other oils. I do alot of short trips with this truck and put alot of hard miles on it, this oil is up to the task.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert: space

Easier cold start and better fuel economy.

Advanced fuel economy.Superior engine protection.Fully synthetic motor oil.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Michael: space

For me it's the BEST!

I use SS 0W-30 in my daily driver '06 Mustang. Change interval once a year with an Amsoil filter. The oil flows like water but slippery to the touch. When the engine idles all you hear is the muted sound of wet valves, and when I punch it all you hear is pure muscle; no pings, no knocks, just a well oiled machine!
That car sees only Amsoil products and has 86000 miles on it. I have never had to add a single drop of oil to the engine between oil changes, ever. Every week when I pull the dip stick the same 2 punch holes are wet with oil . . . i rest my case, this is good stuff!

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Robert: space

I think it's an outstanding oil for cars with a blower

I have a nearly 600hp 03 mustang cobra. Based on the used oil analysis I've done over the past 3 yrs, I've gone almost 6000 miles one interval and the oil didn't shear. I don't know if this makes the 0w-30 SS an outstanding oil vs other off the shelf oils, but I do know that high horsepower applications pls e greater stress on motor oils. So extract from my review, what you wish.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jay: space

There's not another Oil for Me ! AMSOIL MAN FOREVER!

I've been using Amsoil for over 25 years! I use 0-30 Signature Series in my 2011 Subaru OutBack since the first oil change! 175,000 miles now & still Purring like a Kitten! Also running in my wife's new Xfinity Q60L !

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Larry: space

Great product

The 0-30 works well in my old Dodge and I plan on using it from now on.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Danjp1975: space

Piece of mind

I travel a lot every week. I usually drive over a thousand miles each week so I don't need to be getting ripped off in quick change places. I don't really keep track of how many miles I go in between changes any more and I've had no engine issue that relate to wear. This product performs as advertised.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mike: space

Nothing but Amsoil for my Mazda3

I bought this car used - it's a 2008 Mazda3 S - from my best friend, so I knew its full history already. He's run Amsoil in it since brand new, and I plan to continue the same. It just rolled over 200,000 miles last week, and mechanically, the car has been in the shop twice in its lifetime - both for air conditioner issues. It doesn't burn or leak oil, and never has. When something is treating you this well, why would you switch to anything else?

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Steve The 'G' Man: space

Superior Product !

The Best Engine Protection on the Market ! I drive a 2012 Toyota Camry & The Manufacturer recommends 0-20 Weight Oil..... which is supposed to provide engine protection up to 100 Degrees. Well I live in Las Vegas Nevada where Summer Temps can reach 117 Degrees..... The signature Amsoil 0-30 is far more protection

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by pappy: space

great oil

i've been using this oil for many years and i am completely satisfied with it.i actually gained about 2-3 miles more per gallon of gas.i usually change this oil and filter every 8-10,000 miles and when i do it is never black.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by lynn: space

i lov how it make my car run better

love this product

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)

Reviewed by Alvin Chen: space

2013 Chev Equinox 3.6L

After some research I decided to run 0w30 instead of the recommended 5w30. This was to gain some additional mpg. I chose Ams oil since this 0w30 is rated for GM dexos1.

This is the first time using Amsoil, engine got smoother & getting over 60 miles more per tank of gas. I assume the lower viscosity and the quality of oil are both contributing to better gas mileage. This saves a lot now, so will continue to use this brand.

Item Reviewed: Signature Series 0W-30 100% Synthetic Motor Oil (AZO)
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