STA-BIL Diesel Fuel Stabilizer Case of 4

The STA-BIL Diesel Fuel Stabilizer Case of 4 is a fuel-treatment product formulated to keep diesel fuel fresh while reducing sludge and sediment formation, cleaning and lubricating injectors, helping remove water, and protecting the fuel system from corrosion. It is intended for routine fuel-system maintenance or storage preparation, depending on the formula, and is designed to help engines start and run more consistently by addressing common fuel degradation and contamination problems.

For in-season use, the source directions specify 1 oz per 10 gallons of diesel; for storage, 1 oz per 5 gallons. The formula does not contain alcohol. Using the correct treatment ratio matters because fuel additives are designed around a specific concentration, and adding more than directed does not improve the result and may be contrary to the manufacturer’s instructions.

Add the treatment to fresh, compatible fuel and follow the product directions for in-season use or storage. For stored equipment, circulate treated fuel through the engine as directed so the additive reaches the fuel system rather than remaining only in the tank. Always confirm the fuel type before choosing between gasoline, marine, and diesel formulations.

Key Features

• Protect fuel during use or storage: Keep diesel fuel fresh while reducing sludge and sediment formation, cleaning and lubricating injectors, helping remove water, and protecting the fuel system from corrosion.
• Treat fuel at a defined concentration: Following the specified ounce-per-gallon ratio helps the additive work as intended.
• Address deposits and corrosion inside the fuel system: The formula targets problems that can affect injectors, carburetors, metal components, and combustion performance.
• Choose the formula that matches the fuel: Marine gasoline, storage gasoline, and diesel versions are formulated for different applications.

Frequently Asked Questions