Tuff Jug is used in the industrial, construction, and motorsport industries for the transportation, storage, and proper disposal of the fluids listed: water, antifreeze, engine oil, hydraulic fluid, brake fluid, windshield washer fluid, solvents, cleaners, transmission fluid, diesel exhaust fluid, fertilizer, feed, performance fuel additives and more! Tuff Jug is not certified as a Portable Fuel Container as defined by the ARB, DOT or EPA, but fuel will not harm the material construction of the jug.