Cataclean is a fuel and exhaust system cleaner. Cataclean will remove the harmful carbon build-up in the valves, injectors, oxygen sensors, EGR valve, and catalytic convertor. By the nature of a hybrid system the engine cycle is stop and start?. Cataclean will also reduce the particulates in a PPF, preventing clogging. Cataclean can improve fuel economy, reduce emissions, restore performance and extend the life of engine/exhaust parts.