Cataclean is patented & EPA approved complete engine, fuel and exhaust system cleaner that has been proven to reduce carbon build-up and also clean your vehicle’s oxygen sensors, fuel injectors and cylinder heads. Excess carbon build-up robs your vehicle of horsepower, wastes fuel and increases emissions output. Cataclean helps to reduce carbon build-up and optimizes your vehicles complete powertrain. Cataclean eliminates fuel injector build-up cleaning the fuel system for maximum power productionPatented & EPA Approved Complete Engine, Fuel and Exhaust System Cleaner Reduces Emissions an Improves Overall Engine Performance