MOTUL CLEAN CATALIZERS is a cleaning additive designed for use in all types of gasoline engine catalysts, oxidation catalysts and TWC (Three Way Catalyzer). MOTUL CLEAN CATALIZERS cleans the entire fuel system, dissolves resins, gums and carbon deposits in lambda probes and ceramic honeycombs of the catalytic converter.Mixed with gasoline, MOTUL CLEAN CATALYST provides:• Faster and more efficient cleaning of the catalytic converter and oxygen sensors• Restores the original power and performance of the engine