Wynns Formula Gold Diesel Treatment The Wynns Formula Gold High Performance Diesel System Treatment is a Premium multi-function fuel system cleaning additive. It cleans & lubricates the fuel pump and injectors, lowers exhaust emissions and restores lost fuel economy. It helps to maintain the cleanliness of the EGR valve & Diesel Particulate Filter (DPF), and contains cerium which helps remove soot deposits from the exhaust & DPF. Features & Benefits: Immediately improves combustion, enhancing engine performance & improving acceleration Reduces fuel consumption Reduces black smoke Cleans and helps prevent blockages of Diesel Particulate Filters Cleans & protects diesel injection systems Protects against oxidation & corrosion Lubricates to compensate for low sulphur diesel One 500ml bottle treats up to 70 litres of diesel Prevents deposit formation Recommended for all diesel engines (new & old) Doesn't harm oxidizing catalysts or soot filters for diesel engines