Lucas Oil Fuel Treatment 10013 1 Gallon (Pack of 4) — Cleans, Lubricates & Stabilizes Gasoline & Diesel

Lucas Oil 10013 Fuel Treatment is a concentrated fuel additive that cleans, lubricates and stabilizes gasoline and diesel systems to help engines run more efficiently.

This fuel treatment is formulated for both carbureted and fuel-injected engines, and works with gasoline and diesel alike. Its blend of high-detergent additives and slick oils removes deposits, lubricates pumps and injectors, and helps fuel burn more completely. The formula also addresses issues caused by low-sulfur diesel and serves as a lead substitute where older engines require leaded fuel properties.

How does Lucas Fuel Treatment improve engine performance?

By removing varnish, gum and carbon deposits from carburetors and injectors, the treatment restores proper fuel flow and spray patterns. Better atomization and cleaner combustion often translate to smoother throttle response and steadier idling without altering engine design.

• Detergent agents dissolve deposits that restrict fuel flow
• Slick oils lubricate fuel pumps and injectors for longer life
• Enhances fuel burn to reduce wasted fuel and exhaust buildup

Can I use this product in both gasoline and diesel vehicles?

Yes — the Lucas 10013 formula works in both fuel types and in carbureted or fuel-injected systems. It neutralizes negative effects of low-sulfur diesel and replaces lead-like protection where needed, making it versatile for mixed fleets or classic cars.

• Safe for gasoline engines, including fuel-injected systems
• Treats low-sulfur diesel issues to protect components
• Suitable for vehicles that historically required leaded fuel

How much should I use and how often?

Dosage depends on tank size and condition: follow label directions for best results, but typical use is with each fill-up or as a periodic system tune-up. Regular treatments help maintain clean injectors and consistent performance over time.

• Use label-recommended amounts per gallon or liter of fuel
• Apply at fill-up for continuous protection and cleaning
• Keep a maintenance schedule for older or high-mileage engines

Will this product help passing emissions tests?

By promoting more complete combustion and reducing deposit-related drivability issues, the treatment can contribute to lower exhaust emissions. It is not a guaranteed fix for all emission failures, but it supports cleaner running that may help meet test requirements when used correctly.

• Improves combustion efficiency to reduce some exhaust pollutants
• Clears injectors and carburetors that can cause high emissions
• Works as part of routine maintenance before emissions testing

Who is this for: Lucas Oil 10013 Fuel Treatment (1 gallon, pack of 4) is designed for vehicle owners, fleet managers, and classic-car restorers who want a concentrated, multi-purpose fuel additive. It's particularly useful for operators of mixed gasoline and diesel vehicles, owners of older engines needing lead-substitute protection, and anyone seeking a fuel-system tune-up that supports pump and injector longevity.