Keep the engine and fuel system in your Gas Vehicle clean with Fuel Additive. Most additives are specially formulated to reduce smoke, improve engine performance, as well as clean fuel and engine components. In addition to lubricity and cetane enhancers, some additives are designed specifically for cold weather to protect fuel and reduce fuel gelling. Find the additives you need in your vehicle from the top brands like FPPF, Hot Shot's Secret, Lucas Oil, XDP, and more!