Combats sludge formation and disperses exiting sludge in fuel tanks. Combats bacterial and fungal growth, cleans injectors, lubricates fuel system. Prevents corrosion and prepares fule tanks for winter conditions and storage. Fuel Prep also conditions less stable diesel fuels by allowing them to burn cleaner and more completely, thus improving emissions and injector spray patterns. Fuel Prep also reduces accumulation of unburned carbon particles so engines stay cleaner. Regular use of this conditioner also reduces lube oil dilution and contamination. 12 oz container. Replaces 100016 unit.