How much DIESEL Formula STA-BIL® should I add to fuel?
We recommend using DIESEL Formula STA-BIL® at EVERY FILL up to protect your fuel system year-round from sludge and sediment formation, water, corrosion, and breakdown of the fuel. For use in every tank, use 1 ounce in every 10 gallons of fuel. If using product only during storage, use 1 ounce in every 5 gallons of fuel.