The bacteria live in the moisture and feed on the fuel. When microorganisms enter the fuel tank, they spread and stick. The first indication of a problem may be low fuel pressure. Protecting against the potential growth of bacteria known as “diesel bug” prevents problems with the fuel system and ensures good fuel quality and efficiency. Regular use and refreshment of the fuel in our tanks will help reduce the spread and the use of an additive will keep the fuel system and the fuel in the tank clean.