| Product Code | Package Size | Unit of Measure |
|---|---|---|
| AUV05QT-EA | Quart Bottle | Each |
| AUV05QT-CA | Bottle | Case of 12 |
AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil is a purpose-built replacement for Polaris PS-4 Extreme Full Synthetic 0W-50 Engine Oil, engineered to protect high-revving, shrouded engines in Polaris Ranger, RZR, Sportsman and General machines through punishing heat, heavy loads and brutal terrain.
ATVs and UTVs live a hard life. Shrouded engine compartments trap heat. Accessories like roofs, doors, skid plates, winches and plows add weight that pushes drivetrain temps even higher. Aggressive trail riding and heavy work duty compound the problem, breaking down oils designed for standard service and leaving critical engine components exposed to accelerated wear. A 0W-50 synthetic motor oil built specifically for this environment is not optional, it is the baseline for reliable operation.
RESERVE HEAT PROTECTION FOR SHROUDED ENGINES
Enclosed ATV and UTV engine bays do not get the airflow that exposed motorcycle or automotive engines enjoy. That trapped heat degrades conventional and lower-tier synthetic oils faster, reducing their ability to maintain a protective film on bearings, cylinders and valve train components. AMSOIL 0W-50 Synthetic ATV/UTV Motor Oil delivers an HT/HS viscosity of 5.0 cP at 150°C (ASTM D5481), maintaining a thick, durable oil film under extreme thermal stress. Its viscosity index of 191 (ASTM D2270) is exceptionally high, meaning the oil resists thinning as temperatures climb without being excessively thick when cold.
YEAR-ROUND PERFORMANCE FROM SUBZERO COLD TO PEAK SUMMER HEAT
Some Polaris owners switch between a lighter winter oil and a 10W-50 for summer. This 0W-50 eliminates that hassle. With a pour point of -48°C (-54°F) per ASTM D97, it flows immediately during cold-weather startups, reducing the dry-start wear that shortens engine life. At the other end of the spectrum, a kinematic viscosity of 19.4 cSt at 100°C (ASTM D445) keeps the oil thick enough to protect under sustained high-temperature, high-load operation. One oil, all seasons, no compromises.
RELIABLE WEAR PROTECTION UNDER HEAVY LOADS
Hauling feed, plowing snow, dragging logs or hammering whoops on a trail ride all punish engine internals. AMSOIL 0W-50 Synthetic ATV/UTV Motor Oil posted a Four-Ball Wear scar diameter of 0.53 mm in ASTM D4172 testing (150°C, 1800 rpm, 40 kg, 1 hour), demonstrating strong anti-wear performance in high-contact-pressure conditions. Advanced synthetic base oils resist oxidation and thermal breakdown, helping prevent the sludge and varnish buildup that chokes oil passages and accelerates component failure.
WET-CLUTCH COMPATIBLE WITH CONFIDENT ENGAGEMENT
Many ATVs and UTVs, including Polaris models, share engine oil with the clutch system. AMSOIL 0W-50 Synthetic ATV/UTV Motor Oil contains no friction modifiers that can cause clutch slippage. It meets the JASO MA specification, promoting smooth shifting, positive clutch engagement and consistent clutch feel whether you are crawling over rocks or accelerating hard out of a corner. It also helps control clutch-area heat, which extends clutch life over time.
SPECIFICATIONS AND COMPATIBILITY
AMSOIL 0W-50 Synthetic ATV/UTV Motor Oil meets API SL and JASO MA specifications. It is specifically recommended for Polaris Ranger, RZR, Sportsman and General ATVs and UTVs that require a 0W-50 motor oil, and serves as a direct replacement for Polaris PS-4 Extreme Full Synthetic 0W-50 Engine Oil. It is compatible with other synthetic and conventional motor oils, though mixing will reduce the performance benefits and service life of the AMSOIL product. Aftermarket oil additives are not recommended. The product is Warranty Secure and will not void your factory warranty.
SERVICE LIFE
Follow the original equipment manufacturer's recommended oil-change interval.
| Property | Value | Test Method |
|---|---|---|
| Kinematic Viscosity @ 100°C, cSt | 19.4 | ASTM D445 |
| Kinematic Viscosity @ 40°C, cSt | 114.4 | ASTM D445 |
| Viscosity Index | 191 | ASTM D2270 |
| Flash Point, °C (°F) | 220 (428) | ASTM D92 |
| Fire Point, °C (°F) | 230 (446) | ASTM D92 |
| Pour Point, °C (°F) | -48 (-54) | ASTM D97 |
| Noack Volatility, % weight loss | 6.7 | ASTM D5800 |
| Four-Ball Wear Test, mm (150°C, 1800 rpm, 40 kg, 1 hr) | 0.53 | ASTM D4172 |
| HT/HS Viscosity @ 150°C, cP | 5.0 | ASTM D5481 |
What ATVs and UTVs is AMSOIL 0W-50 synthetic ATV/UTV motor oil designed for?
AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil (AUV05QT) is formulated specifically for use in Polaris Ranger, RZR, and Sportsman ATVs and UTVs. It is developed for both hard-working utility and high-performance powersports applications. Verified users also report using it successfully in vehicles like the Kawasaki KRX, Honda Pioneer 700, and Yamaha YFZ 450R, among other ATVs and UTVs that call for a 0W-50 viscosity.
How does AMSOIL 0W-50 ATV/UTV oil protect engines under extreme heat and heavy loads?
AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil uses advanced synthetic technology that delivers reserve protection against heat for heavily loaded engines. It resists thinning due to extreme heat and mechanical shear, maintaining superior protection in hot operating conditions. The formulation also resists oxidation and helps prevent sludge and varnish buildup, while aiding in cooling shrouded engines that are common in ATV and UTV designs.
What does the 0W-50 viscosity rating mean for AMSOIL ATV/UTV motor oil?
The 0W-50 viscosity rating means AMSOIL ATV/UTV Motor Oil remains fluid in subzero temperatures for excellent cold-start protection (the 0W component) while maintaining a thick, durable protective film at high operating temperatures (the 50 component). This wide viscosity range makes it ideal as a year-round oil in applications that would otherwise recommend switching to a 10W-50 in hot weather, saving riders the time and money of seasonal oil changes.
How does AMSOIL 0W-50 ATV/UTV oil compare to OEM Polaris branded oil?
AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil is purpose-built by AMSOIL as a cost-effective, high-performance alternative to OEM-branded fluids for Polaris Ranger, RZR, and Sportsman models. Its advanced synthetic formulation provides reserve heat protection, reliable wear protection, and superior resistance to oxidation, sludge, and varnish. Verified owners of 2024 Polaris Ranger 1000 and General 1000 XP4 models report noticeably smoother engine operation after switching to AMSOIL.
Can I use AMSOIL 0W-50 ATV/UTV motor oil year-round instead of switching oils seasonally?
Yes. AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil is designed as a year-round oil for applications that recommend switching to a 10W-50 in hot weather. It remains fluid in subzero temperatures for reliable cold-weather startups and resists thinning in extreme heat and under mechanical shear. This eliminates the need for seasonal oil changes, helping riders save time and money on maintenance.
Is AMSOIL 0W-50 ATV/UTV oil safe for wet clutch systems in ATVs and UTVs?
Yes, AMSOIL 0W-50 100% Synthetic ATV/UTV Motor Oil is formulated for ATV and UTV applications that commonly use wet clutch systems. A verified user running it in a Honda Pioneer 700 with a wet clutch reported that the clutch grabbed better and overall engine performance improved, especially under load when carrying passengers or towing a trailer. The oil is purpose-built for the demands of powersports engines that share oil between the engine and clutch.
Product Details PDF - AMSOIL 0W-50 100% SYNTHETIC ATV/UTV MOTOR OIL
