VPS Oil Additive is custom designed to provide consistent peak performance through extreme temperatures, loads and stress. For professional use only. Add entire contents to crankcase. Safe for all vehicles makes models and types, both foreign and domestic. VPS Complete Fuel System Cleaner is a premium product containing synthetic cleaners designed to clean the entire fuel system. Maximum power and performance is restored by removing the deposits that interfere with proper engine operation. Removing combustion chamber deposits can reduce the need for gasoline with a higher octane rating. Fuel injectors, intake valves, manifolds, ports and carburetors are cleaned by VPS Complete Fuel System Treatment. Clean fuel systems mean lower emissions. Safe for catalytic converters and oxygen sensors. Contains no alcohol.