Developed for cleaning fuel systems and injectors within minutes and restore lost power caused by deposits. Ideally Diesel Purge is added into the fuel filter housing. It will eliminate knocking, pinging and exhaust smoke. Improves start up performance. Suitable for use in all diesel engines, with or without turbochargers. Safe for use with catalytic converters and particulate filters (DPF). Preventive use: Fill the fuel filter up with Diesel Purge when doing filter replacement, put the rest in tank. In case of problems run the engine directly with Diesel Purge through intake line or diesel filter.