A combination of active agents, specifically developed to clean the intake valves and the combustion chamber of port injected engines. Protects against corrosion in the fuel system. Suitable for use in all 4-stroke gasoline engines, with or without turbochargers. Safe for use with catalytic converters and particulate filters (GPF). Contents (150 mL) is sufficient for 25-75 Liters (7 gal. to 20 gal.) fuel.