Fuel system additives are poured directly into the tank to clean and protect components throughout the fuel system — injectors, valves, combustion chambers, and fuel lines — that gradually accumulate deposits from normal driving. Buildup in these areas is a common cause of rough idle, hesitation, reduced fuel economy, and lost power, especially in vehicles running lower-quality fuel or sitting for extended periods. Browse fuel injector cleaners, fuel stabilizers, and other fuel system additives for cars, trucks, and SUVs to keep your fuel system running clean.
