AMSOIL 5W-50 Synthetic ATV/UTV Motor Oil
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at National Synthetics — arrange pickup
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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
Shipping & Returns
Fast, Reliable Shipping
- Free standard ground shipping on orders of $100 ($130 in Canada) or more.
- Orders under the threshold ship for a flat $9.99 ($12.99 in Canada) freight charge.
- In-stock items typically delivered in two to three business days.
- U.S. and Canada only — no shipments to PO Boxes.
30-Day Return Policy
- Return unopened, currently marketed products within 30 days for a full refund (minus freight).
- Exchange unopened products within 90 days with no restocking fee.
- Special-order items are non-returnable.
- Returns are handled directly by AMSOIL.
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.