Wynns Xtreme Diesel System Clean is a powerful one-tank clean-up solution designed to restore, protect, and maintain the efficiency of modern high-pressure common rail diesel engines. It helps restore lost engine performance and fuel economy while reducing exhaust emissions. This cleaner also works to protect the engine's fuel pump and injectors, and maintains the cleanliness of the EGR Valve and DPF. It is suitable for diesel vehicles and comes in a 325ml container.