Wynns high performance diesel system treatment is a chemical treatment composed of detergents and a cerium component that has a triple action: Increases engine performance, reduces fuel consumption and reduces black smoke. Immediately improves combustion, which will: Enhance engine performance. Improve acceleration. Reduces fuel consumption. Reduces black smoke. Cleans and protects diesel injection systems. Protects against oxidation and corrosion. Lubricates to compensate for low sulphur diesel. Prevents depositformation. Does not harm oxidizing catalysts or soot filters of diesel engines.