AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil
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Purpose-Built for Polaris ATVs and UTVs
AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil is recommended by AMSOIL in place of Polaris PS-4 Full Synthetic 5W-50 Engine Oil. Its severe-service formulation delivers upgraded protection with strong film strength (5.3 cP HTHS) for Polaris Ranger, RZR, Sportsman and General.
Key Benefits
- Recommended replacement for Polaris PS-4 Full Synthetic 5W-50
- Strong HTHS viscosity (5.3 cP) for severe-service film strength
- Highest viscosity index (179) among non-0W-50 grades
- Pour point of -48°C for excellent cold-weather startup
- Purpose-built for Polaris Ranger, RZR, Sportsman and General
- Wet-clutch compatible with no friction modifiers
- Warranty Secure — keeps factory warranty intact
Strong Film Strength for Severe Service
With the highest viscosity index (179) among non-0W-50 grades, the 5W-50 maintains consistent protection across extreme temperature swings. Its pour point of -48°C (-54°F) provides excellent cold-weather performance while its HTHS of 5.3 cP delivers strong high-temperature film strength.
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 20.1 |
| Kinematic Viscosity @ 40°C, cSt | 128.2 |
| Viscosity Index | 179 |
| Flash Point | 240°C (464°F) |
| Fire Point | 266°C (511°F) |
| Pour Point | -48°C (-54°F) |
| NOACK Volatility, % weight loss | 4.7 |
| Four-Ball Wear Test Scar, mm | 0.52 |
| HT/HS Viscosity @ 150°C, cP | 5.3 |
Industry Certifications & OEM Approvals
API
- SL
JASO
- MA
Applications
Use in ATVs and UTVs that require a 5W-50 motor oil, including the Polaris Ranger, RZR, Sportsman and General. Recommended in place of Polaris PS-4 Full Synthetic 5W-50 Engine Oil.
API SL, JASO MA
Follow the OEM oil-change recommendation.
Pros and Cons
Pros
- Recommended replacement for Polaris PS-4 Full Synthetic 5W-50
- Strong HTHS viscosity (5.3 cP) for severe-service film strength
- Highest viscosity index (179) among non-0W-50 grades
- Pour point of -48°C for excellent cold-weather startup
- Purpose-built for Polaris Ranger, RZR, Sportsman and General
- Wet-clutch compatible with no friction modifiers
- Warranty Secure — keeps factory warranty intact
Cons
- Premium Investment: Higher initial cost compared to conventional or "shelf-brand" synthetic oils.
- Limited Local Retail: Primarily available through authorized dealers and specialized synthetic outlets. National Synthetics is a local stocking dealer. Call 1-678-944-8816 to confirm in-stock items for same-day local pickup.
Order Through Your Independent AMSOIL Dealer
Upgrade from Polaris PS-4 to purpose-built AMSOIL protection. As your Independent AMSOIL Dealer, we provide expert guidance and competitive pricing on all AMSOIL products.
Independent AMSOIL Dealer #1858536
Customer Reviews
See all 265 reviewsExcellent ATV or Motorcycle oil
Been using this for years and only want the best for my toys.
Independent AMSOIL Dealer #1858536. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.