AMSOIL’s Premium Grade ATV and UTV Synthetic 0W-40 for use in most ATVs
A great upgrade for ATVs and UTVs requiring 10W-30, 0W-40, 5W-40, 10W-40 and 5W-50
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. Remember the 0W part is the winter test rating. It starts easily in cold weather yet out protects in extreme heat. It’s still a SAE-40 once the engine is at operating temperatures.
Formulated 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.
Download Product Data Bulletin on the ATV 0W-40
Customer Testimonial:
Honda Rancher
By JAMES, a Verified Buyer from Sikeston Missouri on April 05, 2025
2012 Honda rancher had very sticky shifting. Had changed oil and adjusted clutch, but nothing helped. Someone on YouTube suggested Amsoil for a fix.. simply changed oil and filter to Amsoil 4-stroke 0w-40. Instantly started to shift smoothly and has continued to improve. Problem solved.
Resists Heat and Thermal Breakdown
AMSOIL engineered 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.
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.
Vehicle Look-up: Match AMSOIL Products to your model
Anti-Foam under the highest stress!
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 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 Sioux Falls 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!
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.
Available in Stan Houston’s Equipment store in Sioux Falls on W. 12th St.