Concentrate treats 1500 Gallons. Clean Diesel Technologies patented Platinum Plus DFX fuel borne catalyst can improve your diesel engine performance. You will notice an improvement in performance through an improvement in mileage of 7 percent or more. Your NOX, Carbon Monoxide, Particulate Material (PM), and hydrocarbon emissions will be reduced. Use this additive with biodiesel and achieve even better results. One Gallon can treats 1500 gallons. No International Shipping as this is a Dangerous Good.