We formulate VP Professional Grade SAE 15W50 Full Synthetic Racing Oil for race track applications. Its leading-edge chemistry and advanced technology helps you perform and succeed. Pro Grade 15w50 synthetic oil delivers superior durability and friction control for maximum power and protection. We design it for professionals, semi-pro, and high-intensity amateur racers for on-track applications. Do not use with top-fuel/nitro drag racing or catalytic converters, which are on most street cars. Furthermore, DO NOT mix oil additive supplements with any VP Professional Grade Full Synthetic Racing Oils. Best-in-class 15W50 synthetic racing oil - when results matter.