Sta-Bil Diesel Fuel Stabilizer - 32oz Sta-Bil Diesel Fuel Stabilizer is a diesel additive that keeps fuel fresh for quick, reliable starts and maximized engine performance. This formula is designed for use with all diesel engines, and all diesel fuels. Sta-Bil Diesel Fuel Stabilizer prevents sludge and sediment formation while cleaning and lubricating fuel injectors to improve performance and remove water. It is safe to use and recommended for use each time you fill-up. Features Prevents sludge