Wynns Diesel Total Action Treatment is a strong chemical treatment for diesel engines which cleans the entire fuel system with a highly concentrated formula to restore combustion efficiency and aids regeneration of the Diesel Particulate Filter. It offers triple action cleaning: before, during and after combustion. This treatment reduces exhaust emissions and black smoke, improves combustion, engine performance and fuel economy. It is Wynns' fastest acting product for complete cleaning of the entire fuel system. It instantly cleans and protects the injectors, restores and maintains ideal injector spray pattern. It also prevents clogging of the EGR Valve, aids DPF regeneration, and aids turbo cleaning.