We formulate VP Professional Grade SAE 5w30 Full Synthetic Racing Oil with leading-edge chemistry for race track applications. Its advanced technology helps you perform and succeed. Our 5w30 synthetic engine oil delivers superior durability and friction control for maximum power and protection. It is suited for professionals, semi-pro, and high-intensity amateur racers. However, it is NOT compatible with either top-fuel/nitro drag racing or catalytic converters, which are found on most streetcars. Furthermore, DO NOT mix oil additive supplements with any VP Professional Grade Full Synthetic Racing Oils.