- Upper Cylinder Fuel Lubricant, designed to cut wear, carbon, and friction for both gasoline and diesel engines
- Power Steering Stop Leak, a seal conditioner that addresses maintenance problems with rack-and-pinion power steering units
- High Mileage Oil Stabilizer, a pure-petroleum product that raises oil pressure and helps combat the noise, blow-by, and oil consumption in worn, high-mileage engines
- Engine Break-In Oil Additive, a zinc-enhanced oil supplement that provides extra protection to camshaft, lifters, and other valvetrain components in a recently rebuilt engine
One of the most popular Lucas products is Lucas Fuel Treatment, an additive that goes straight in the tank (for gas or diesel engines) and is formulated with detergents and lubricants that clean and condition the entire fuel system. Additionally, Lucas Fuel Treatment prevents damage to valves and valve seats in classic vehicles designed to run on leaded fuel.
Lucas Fuel Treatment contains lubricants that help keep the upper cylinder, piston rings, and valves in shape, as well as compounds that cut through carbon deposits on valves and the piston crown. For diesel engines, Lucas Fuel Treatment can compensate for low-sulfur diesel fuel and cut emissions. The end result is a smoother-running engine and better fuel economy.