Polytron Gasoline Diesel Fuel Conditioner (GDFC) 12oz (354ml) Bottle - Military Industrial Grade For use with automotive, marine, industrial gasoline, diesel, and 2-stroke fuel; 12oz treats 90 gallons of fuel. DIRECTION: typically add 0.1% by volume of fuel or 2oz (60ml) of GDFC to every 15 gallons of fuel. Polytron Gasoline Diesel Fuel Conditioner (GDFC) is made of industrial strength, effective technologically advanced fuel conditioner formula containing scientific breakthrough Polytron Metal Treatment Concentrate (MTC) Maximize fuel mileage (MPG) and power & torque performance; provides quicker start-up in cold weather. Maximize benefit by using with Polytron MTC in your engine Contributes greatly to cleaner emissions; helps pass smog test Cleans and protects the entire fuel system, including fuel injectors, lines, and pumps, intake valves, ports, and combustion chamber