Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12. Stanadyne Performance Formula Pint Bottle 16oz., Case of 12 Bottles Treats 60 gallons diesel fuel per Bottle Note: All Stanadyne Diesel Fuel Additives can be blended with each other and "double-dosing" is not damaging - although it may not provide twice the benefit.