Gold Eagle Diesel Sta-Bil Fuel Stabilizer - Prevents sludge and sediment formation. Cleans and lubricates fuel injectors to improve performance. Helps remove water that microbes and algae require for growth. Recommended for use at every fill up. Safe for ALL diesel fuels, and ALL diesel engines, including agricultural and marine. 32 oz. size, treats 320 gallons. (Not for sale in Canada.)