Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)
 Formula 4-Stroke 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

A commercial grade formulation designed for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. Recommended for use wherever SAE 10W-30 or SAE 30 oil is specified in gasoline or diesel engines, transmissions, hydraulics, and chain cases requiring the listed specifications. Applications include maintenance equipment, tractors, lawn and garden equipment, generators, compactors, pumps, light towers, welders, log splitters, power washers, cement mixers and trowels, skid-steers, excavators and compressors.

Package sizes include:

1-Quart Bottle
1-Quart Bottles (case of 12)
30-Gallon Drums
55-Gallon Drums

Product Code: ASE • Brand: AMSOIL




MSDS Data Sheet

Product Details Tech Data Reviews & Rating

Product Applications
AMSOIL Formula 4-Stroke® Small Engine Oil is recommended for use wherever SAE 10W-30 or SAE 30 oil is specified in gasoline or diesel engines, transmissions, hydraulics and chain cases that require the following:

• API SL, SJ, SH, SG...(Gasoline)
• API CF, CD (Diesel)
• JASO MA/MA2 (Motorcycle Wet Clutch)

Engine manufacturers include - Briggs & Stratton, Kohler, Honda, Tecumseh, Robin, Kawasaki, Onan, Kubota, Yanmar, Wisconsin, Power Train, Vanguard and Linemar.

Equipment brands include - Toro, Ariens, Sears Craftsman, John Deere, MTD, Bolens, Dixie Chopper, Yard-Man, Coleman, Murry, Troy-Bilt, Ex-Cell Generac, Snapper, Simplicity, Ingersoll, Wheel Horse, Homelite, Porter Cable, Devilbass, Poulan, Cambell, Hausfeld, Massey Ferguson, Thomas, Bobcat, Kubota, New Holland and Caterpillar.

Applications include - Maintenance equipment, tractors, lawn and garden equipment, generators, compactors, pumps, light towers, log splitters, welders, power washers, cement mixers and trowels, skid-steers, excavators and compressors.

Product Description
AMSOIL Formula 4-Stroke® Small Engine Oil (ASE) is a robust formulation designed for hot temperature, severe service operation of small engines where routine maintenance is often difficult or infrequent. It is formulated with premium synthetic base oils that exceed both 10W-30 multi-grade and SAE 30 straight-grade viscosity requirements. Unlike conventional SAE 30 motor oils, AMSOIL ASE has a naturally high viscosity index and does not contain paraffin (wax). It has a -38°F pour point and qualifies for SAE 10W, making it an “all season,” multigrade lubricant with a wide operating temperature range. As an SAE 30 weight motor oil, AMSOIL ASE provides outstanding protection for hot operating engines. Formula 4-Stroke® Small Engine Oil is a commercial grade lubricant that helps improve productivity and reduce maintenance costs through superior engine protection.

Resists Heat and Reduces Oil Consumption
AMSOIL engineered Formula 4-Stroke® Small Engine Oil to withstand the high temperatures of hard working engines. It effectively resists oxidation and oil vaporization to control oil thickening and reduce oil consumption. AMSOIL ASE lasts longer in service than conventional oils and keeps engines clean for peak operating efficiency.

Excellent For Transmission Systems
AMSOIL Formula 4-Stroke® Small Engine Oil is a shear stable formulation that contains no friction modifiers. It will not break down during rigorous mechanical activity, making it ideal for hydraulic or hydrostatic systems and chain cases. It is wet clutch compatible and designed to prevent clutch slippage in commercial or recreational transmissions. AMSOIL Formula 4-Stroke® Small Engine Oil protects gears and bearings during high-demand, commercial duty service.

Superior Protection
AMSOIL Formula 4-Stroke® Small Engine Oil is formulated with high levels of premium anti-wear and detergent additive technology. It provides severe service protection of pistons, bearings and gears and effectively neutralizes acids from combustion by-products prone to small engines. Anti-rust additives further protect equipment during storage or infrequent use.

Mixing AMSOIL
AMSOIL Formula 4-Stroke® Small Engine Oil is compatible with conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oils, however, will shorten the oil life expectancy and reduce the performance benefits. Aftermarket oil additives are not recommended for use with AMSOIL motor oils.

Service Life
Follow the equipment manufacturer’s recommended drain intervals.

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 ASE.

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

TYPICAL TECHNICAL PROPERTIES
 FORMULA 4-STROKE® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)
Kinematic Viscosity @ 100°C, cSt (ASTM D-445) 10.6
Kinematic Viscosity @ 40°C, cSt (ASTM D-445) 67.0
Viscosity Index (ASTM D-2270) 146
Pour Point °C (°F) (ASTM D-97) -39 (-38)
Flash Point °C (°F) (ASTM D-92) 236 (457)
Fire Point °C (°F) (ASTM D-92) 256 (493)
Four Ball Wear Test
(ASTM D-4172B: 40 kg, 75°C, 1200 rpm, 1 hour), Scar, mm
0.40
Noack Volatility, % weight loss (g/100g) (ASTM D-5800) 4.1%
High Temperature/High Shear @ 150°C and 1.0 X 106 s-1, cP (ASTM D 4683), cP 3.25
Total Base Number 8.4

Did this product meet your expectations?

(click on a star to rate)
Product Name: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)
Current Rating: 5 out of 5 stars
Total Votes: 13 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 Kenwood: space

The only oil for my mower!

I bought a new riding mower and wanted the best oil I could find for it. I found the Formula 4 Stroke small engine oil and liked the fact that it was specifically designed for small engines. This year has been very hot and the grass has grown like crazy so the Amsoil has been put to the test and passed with flying colors. This is the only oil I will put in my mowers from now on.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 W: space

No turning back!! Love this oil!!

My mower runs cooler/ quieter and since this oil I don't ever have to add oil between cuts. It's worth Every penny!!

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Jack: space

Excellent

Generator

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 WD: space

Best warm weather oil for outdoor power equipment

We use Formula 4-Stroke in our commercial lawn mowing business...45 deg F to 100 deg F. It is proving a great oil, no consumption, engines still running like new, and the oil still looks fresh at the OCI. At the 10w rating, it will be fine for cool weather mowing. I'd use the 0w40 formula for severe winter OPE use.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Big guy: space

Great product keep Small Engines running clean

Using on small engines generators lawnmowers and snow blowers

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Northeast Homeowner: space

Great small engine oil

I use this oil in my 36 inch walk behind mower, the snow blower and a permanent outdoor standby generator. These small engines are still full on the dipstick at their annual oil changes and the oil looks clean. All of this power equipment is now 10 years old and they are still going strong. Thanks for making such a great product for small engines.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Leonard: space

I have purchased several times

Typical high quality Amsoil product. I use it in my 3 mowers.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 None: space

The oil is second to no other brand.

I use a soil in all my lawn and garden Equiptment , very happy with it ,without a doubt the best oil there is,

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 in Tennessee: space

Excellent protection, as you would expect!

I use this oil in my walk behind mower & lawn tractor. One change through the season with about 50 hours on the work horse lawn tractor & the oil is still still clean, I almost feel wasteful when I change it.
However, I know better. I've used Amsoil for the last 12 years & have not been disappointed.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Brian: space

repeat buyer of this oil

I use this oil in riding and push mower with no problems and know its of the same quality as the automotive oil. I've found Amsoil to be a very reliable especially when I lived in the midwest and will continue to run Amsoil is all my vehicles. I give two thumbs up to the Z-Rod oil as well my '62 Galaxie sure likes this oil.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 JCD: space

Best small engine oil

Has treated me well in all 4stroke small engine equipment for over a decade. Have a 10+ year old power washer, generator, and lawn mower that are still running as good as new.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 Shakey: space

I would buy this product again

I bought a new Exmark 24hp Kawasaki engine got 300 hr on it already change it ever 50hr so far not been a hair below full at 50hr yet

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)

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 PB: space

Quality alternative/peace of mind

I use the formula 4 stroke in all my small engine equipment: pressure washer, lawn mower, engine-driven air compressor, brush mower. I feel it's a quality alternative to brands at local parts stores and it gives me peace-of-mind for longer oil change intervals and severe duty service-just as intended.

Item Reviewed: Formula 4-Stroke® 10W-30/SAE 30 Synthetic Small Engine Oil (ASE)
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