Removes deposits from your fuel system + fights engine friction. Scientifically engineered with 3X the amount of cleaning agents vs. the leading premium gasoline*. High-performance detergents and friction modifiers come together to form a one-source solution to help: save gas by deep cleaning the entire fuel system; restore peak performance; reduce friction; prevent ethanol deposits; and inhibit corrosion. key feature 1: STP 5IN1 FUEL SYSTEM CLEANER 354 ML: STP Company's most advanced fuel additive formula yet. key feature 2: Removes deposits from your fuel system + fights engine friction. key feature 3: Scientifically engineered with 3X the amount of cleaning agents vs. the leading premium gasoline key feature 4: High-performance detergents and friction modifiers come together to form a one-source solution. key feature 5: Usage Directions: Use with every oil change - 354 ml treats approximately 80 ltrs