Mecatech Diesel Particulate Filter Cleaner (DPF)This 1 litre can of Mecatech cleaner will clean your entire intake injection catalyst and particulate filter systems. It lowers the DPF operating temperature and encourages the combustion of soot particles. This cleaner is compatible with all DPF filters on the market.Recommended for all recent EURO 4 EURO 5 & EURO 6 vehicles.In many cases this cleaner will remove the DPF fault light on many vehicles (Peugeot Citroen Renault) and restore optimal operation.1 litre of fuel will treat 50-70 litres of diesel. Pour directly into your tank before refuelling. We recommend 1 treatment every 50 000 km or 1 year.Recommended by Mecatech : If you have a fault or for optimal cleaning use half a tank of fuel then start a forced DPF regeneration.