AMSOL Built this 0W-40 as a premium for ATV’s needing 0W-30, 5W-40, 10W-40, 15W-40 and even 5W-50 Power Sports Synthetic Motor Oil
This was developed to be the main universal ATV / UTV synthetic oil for most ATV’s. We later came out with several others but if you want the “signature” blended version this is the one. Replaces all 10w-30, 0W-30, 5W-40, 0W-40, 10W-40 and the Polaris 5W-50 recommendation in most units.
For all climates. Suggested for extreme heat and severe cold and everything in between. This is still our primary recommendation for all brands (ATV and Snowmobiles) over our specific viscosities. If you love your ATV and love riding you will be impressed. Yes an oil can make that much difference. Remember the 0W part is the winter test rating. Not a Zero weight!! It a reference to a scale for cold cranking loss but once the engine reached operating temperature, it is a SAE 40 just as any 10W-40. Think of it as being more fluid or closer to the proper viscosity before reaching operating temperature. The “W” is representative to a flow-ability scale. This oil was designed as the ultimate performer!!
Start with the ATV/UTV look up guide to find the primary recommendations from AMSOIL then come to the Omaha store.
Match Your VehicleProduct GuidesFormulated for Top ATV and Snowmobile Performance
AMSOIL Formula 4-Stroke Power Sports Synthetic Motor Oil is specially formulated for ATVs, UTVs, snowmobiles and other powersports applications. Its broad viscosity range and wax-free formulation make it excellent for use in both hot and cold temperature extremes. As an SAE 40-weight motor oil, AMSOIL Formula 4-Stroke Power Sports Oil provides outstanding protection for hot-operating engines, while its 0W rating and -60°F pour point ensure easy cranking, excellent cold-weather starting and quick post-startup protection. Formula 4-Stroke Power Sports Oil is an extreme-temperature lubricant that provides outstanding performance in high-performance, recreational or work/utility engines.
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Be sure to download and check out the updated data sheet on the ATV – UTV 0W-40
Download PDFProduct Datasheet
The 0W-40 ATV Oil Resists Heat and Thermal Breakdown
AMSOIL engineered the 0W-40 Formula 4-Stroke Power Sports Synthetic Motor Oil to withstand the high temperatures of recreational engines. It effectively resists oxidation and oil vaporization to help prevent carbon/varnish formation, control oil consumption and minimize exhaust emissions. It also controls oil thickening, promoting improved fuel economy, and it helps keep engines clean for peak operating efficiency.
Excellent For Transmissions
AMSOIL Formula 4-Stroke Power Sports Oil is wet-clutch compatible and contains no friction modifiers, making it ideal for both two- and four-stroke ATV transmissions. The friction-modifier-free formulation is designed to prevent clutch slippage, helping deliver maximum torque and power to the wheels – a critical feature for towing or high-horsepower engines. It meets the frictional requirements of JASO MA/MA2 and ISO-L-EMA2.
Our 0W-40 Offers Superior Wear Protection
AMSOIL Formula 4-Stroke Power Sports Oil is formulated with high levels of anti-wear additives that provide excellent protection for pistons, bearings and gears in transmission-containing units. Its shear-stable, SAE 40 viscosity delivers a thick lubricating film for an extra margin of protection in hard-working engines.
Anti-Foam
Churning occurs in high-rpm engines that can cause oil to foam, depleting its lubricating abilities and increasing heat and wear. AMSOIL Formula 4-Stroke Power Sports Oil controls foam, promoting cooler engine operation and reduced wear.
Synthetic Warehouse Omaha Note:
0W-40 is for all climates! All Extremes!
In our Sioux Falls location this has become one of the top 10 best selling products. Although we have two other ATV motor oils that are more recent additions, this one is really all you need to know about. Best performance in all temperature categories. When we had our business in Texas (Hot summers) customers were amazed by the 0W-40 as to how well it performed in the heat. Yamaha owners especially commented on how well the product quieted the noisy motors once they got up to temperature. Now up here in South Dakota it’s a major hit – so there in Omaha it’s perfect for all your riding. The main benefit is it’s ability to keep deposits down by almost 80%. Ads life and resale value. AMSOIL makes it easy to keep your investment in top shape!
AMSOIL Formula 4-Stroke® Powersports 0W-40 Synthetic Motor Oil | AFF – AMSOIL
Special Additives
AMSOIL Formula 4-Stroke 0W-40 Power Sports Synthetic Motor Oil contains robust dispersant/detergent additives that effectively neutralize the high levels of acids and combustion by-products prone to small engines. It is anti-rust fortified for superior rust prevention, which is especially important in seasonally or infrequently used powersports equipment.
APPLICATIONS AND RECOMMENDATIONS
AMSOIL Formula 4-Stroke 0W-40 Power Sports Synthetic Motor Oil is recommended for four-stroke engines. It is also recommended for transmissions in two- or four-stroke applications. It is an all-climate/all-season oil that replaces 0W-30, 0W-40, 5W-30, 10W-30 and 10W-40 oils for ATVs, UTVs, snowmobiles and other powersports equipment. Also recommended as a replacement for Polaris Synthetic PS-4 Plus and Arctic Cat Synthetic ACX. Manufacturers include Polaris®, Honda®, Yamaha®, Ski-Doo®, Can-Am® (Bombardier®), Suzuki®, Kawasaki® and Arctic Cat®.
- API SN, SM, SL/CF, SJ, SH, SG
- JASO MA/MA2
- ISO-L-EMA2
COMPATIBILITY
AMSOIL Formula 4-Stroke Power Sports Synthetic Motor Oil is compatible with conventional and synthetic motor oils. Mixing AMSOIL motor oils with other 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 motor oils.
SERVICE LIFE
Follow the equipment manufacturer’s recommended drain intervals.
AMSOIL PRODUCT WARRANTY
AMSOIL products are backed by a Limited Liability Warranty. For complete information visit AMSOIL Warranty Information.
Customer Comments on the ATV 0W-40 (AFF):
Best for my ATV and now UTV
By Gino, a Verified Buyer on April 20, 2024
Starts in the coldest temperatures in the winter months while keeping the motor well lubricated all year round. Used this on my Atv sportsman 500 efi and Atv sportsman 440 both 2007 until present with original motors still runs like new.
Amsoil 0w40
Great in my Yamaha
Excellent protection
Great Stuff
Excellent Product
Comments about Formula 4-Stroke Power Sports Synthetic Motor Oil
In the winter, I put this in my 2014 BMW K1600GTL. BMW recommended their 5-40w which is good too, however this Amsoil has a better rating and the lower viscosity allows for quicker pick up and I can actually hear the difference in the followers. In the summer I’ll run Amsoil’s Metric Motorcycle.
Amsoil is the best.
By Joshua 12/22/2016
from undisclosed
I have amsoil in every motor I own. The formula 4 is great stuff. I have it my 2016 renegade 1000xxc and my Honda rubicon.


