Startron Deisel Additive-16oz. Quantity in Basket: None Code: 74-93116 Price: $19.59 Shipping Weight: 1.50 pounds Quantity: StarBrite Star-tron DEISEL FUEL ADDITIVE-16oz. Treats 512 gallons of deisel fuel.1oz. Treats 16 gallons of deisel fuel. For refills 1oz. treats32 gallons of deisel fuel.