MOTUL VALVE AND INJECTOR CLEAN is an additive designed to clean valves and injectors. Improves the effectiveness of fuel injectors and inlet area without the need for disassembly. Deeply cleans contamination in gasoline fuel injection systems. MOTUL VALVE AND INJECTOR CLEAN is an additive designed to clean valves & injectors. Improves the effectiveness of fuel injectors & inlet area without the need for disassembly. Deeply cleans contamination in gasoline fuel injection systems. TYPE OF USE: For Gasoline engines only. Add one can (300 ml) of MOTUL VALVE AND INJECTOR CLEAN every 6 months to the fuel tank before refueling. Sufficient for 16gal of gasoline. For larger tank capacities add 1% of the overall filling content. Attention: Cleaning fluid ? not a fuel substitute.