VP Professional Grade Full Synthetic Racing Oils are formulated for success with leading edge chemistry for race track applications. The oil is formulated to deliver superior durability and friction control for maximum power and protection. It is suited for professionals, semi-pro and high intensity amateur racers for on track applications. It is not designed to be compatible with top-fuel/nitro drag racing or catalytic converters found in most street cars. Do NOT mix oil additive supplements with the VP Professional Grade Full Synthetic Racing Oils.