Redex Diesel System Cleaner is a complete fuel system cleaner for modern diesel engines. It cleans natural accumulations of dirt and debris out of your cars fuel system, leaving you with a much happier, more efficient engine.Cleans fuel system from tank to injectorsRestores lost efficiency and performanceProlong life of engine and partsDiesel is not the cleanest fuel. Over time, as your engine burns it, deposits will build-up through the fuel system. This can result in everything from reduced fuel efficiency and power, to clogged injectors.Regular use of Redex Diesel System Cleaner will help reverse and prevent all of this though. Simply adding the stated "dose" of Redex with a full tank of fuel will clean out these deposits. Regular use should prevent them altogether.Enabling a cleaner spray pattern from your injectors should see a more powerful, fuel-efficient engine.Size - 500ml