Fuel Treatment 5.25 oz

Lucas Oil Fuel Treatment 5.25 oz is a multi-purpose fuel system additive engineered to clean, lubricate, and protect fuel injectors and upper cylinder components in both gasoline and diesel engines. This compact formula addresses common fuel-related performance issues, including carbon buildup, injector clogging, and inadequate lubrication in fuel pumps and injection systems. The product is ideal for vehicle owners seeking preventative maintenance solutions that extend engine life and maintain optimal fuel efficiency across various driving conditions.

The 5.25 oz bottle delivers a concentrated blend designed to dissolve varnish and gum deposits that accumulate on fuel injectors, intake valves, and combustion chamber walls. By restoring cleaner fuel flow, this upper cylinder lubricant reduces rough idling, hesitation, and cold-start issues commonly caused by fuel system contamination. The additive simultaneously provides boundary lubrication to critical fuel system components—particularly important in modern high-pressure direct-injection engines—protecting against wear and extending fuel pump longevity. A single bottle treats a standard fuel tank, making application straightforward with no special equipment required.

This fuel treatment is compatible with both diesel and gasoline engines, making it a versatile choice for multi-vehicle households or fleet maintenance programs. Regular use—typically every 3,000 to 5,000 miles or before seasonal storage—helps prevent fuel system degradation and ensures consistent engine performance. The compact 5.25 oz size is convenient for storage and handling, and the formula integrates seamlessly into standard fuel tanks without affecting fuel stability or engine warranties.