AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil
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Estimated delivery by Mon, Feb 23 or sooner
Maximum Film Strength for High-Performance Engines
AMSOIL Signature Series 5W-50 delivers the thickest protective film in the Signature Series lineup with an HTHS viscosity of 4.45 cP. Built for high-performance and racing-derived engines that demand maximum bearing protection under extreme loads and temperatures.
Key Benefits
- 75% more engine protection against horsepower loss and wear
- Thickest oil film in the Signature Series lineup (HTHS 4.45 cP)
- Guaranteed protection for up to 25,000 miles or 1 year
- Ford WSS-M2C931-C approved for Mustang applications
- GM dexos R approved for Corvette and performance vehicles
- Viscosity index of 185 for consistent protection across temperatures
Technical Specifications
| Property | Value |
|---|---|
| Kinematic Viscosity @ 100°C, cSt | 19.4 |
| Kinematic Viscosity @ 40°C, cSt | 119.5 |
| Viscosity Index | 185 |
| Cold-Crank Viscosity | 5,108 cP (-30°C) |
| HTHS Viscosity, cP | 4.45 |
| Flash Point | 224°C (435°F) |
| Fire Point | 244°C (471°F) |
| Pour Point | -48°C (-54°F) |
| NOACK Volatility, % weight loss | 6.1% |
| Total Base Number (TBN) | 12.5 |
Industry Certifications & OEM Approvals
API
- SP, SN PLUS, SN
Ford
- WSS-M2C931-C (Mustang)
GM
- dexos R
Get AMSOIL Signature Series 5W-50 100% Synthetic Motor Oil Today
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SHOW MY PRICEIndependent AMSOIL Dealer #1858536
Frequently Asked Questions
What vehicles use 5W-50 motor oil?
5W-50 is primarily used in Ford Mustang GT and Shelby models (Ford WSS-M2C931-C), GM Corvette (dexos R), and other high-performance engines. It provides the thickest protective film for maximum bearing protection under extreme loads.
Can I use 5W-50 in cold weather?
Yes. Despite its heavy 50-weight rating, Signature Series 5W-50 has a pour point of -48°C (-54°F), providing excellent cold-weather flow for year-round use.
Independent AMSOIL Dealer #1858536. Product information sourced from AMSOIL. Visit AMSOIL.com for the most current product details and availability.