BG 244 quickly and effectively cleans diesel fuel injectors. It removes carbon deposits from combustion chambers, restores performance, smooths engine idle and helps prevent costly repairs. In only a few short miles of driving, engine response is restored! One quart (946 mL) of BG 244 treats 20-40 gallons of diesel fuel. To maintain fuel system cleanliness and engine performance, add BG 244 to fuel tank at 7,500 to 9,000 mile intervals. Catalytic converter and oxygen sensor safe. We have it in stock so you can get yours now.