10W40 Premium Blend 1 Quart

The 10W40 Premium Blend 1 Quart motor oil by Extreme Racing Oil is specifically engineered for automotive enthusiasts and mechanics who require dependable engine protection across a wide range of operating temperatures. This viscosity grade is ideal for both street-driven modified vehicles and weekend track applications, providing the low-temperature pumpability of a 10-weight oil combined with the high-temperature film strength of a 40-weight.

This premium blend offers enhanced cold-start flow at minus-18°C (0°F) while maintaining robust protection at operating temperatures exceeding 100°C. Its balanced formulation minimizes bearing wear during aggressive acceleration and high-RPM operation, making it particularly suitable for modified engines with tighter tolerances or upgraded components. Premium additives improve oxidation resistance and thermal stability, preventing sludge buildup in critical engine areas.

Owners of turbocharged or supercharged vehicles, as well as those with modified naturally aspirated engines, will benefit most from this oil. The quart format allows for precise top-off management between full drain intervals, making it an excellent choice for tuned vehicles that may consume oil at higher rates than factory specifications.