Best Generic Diesel Additives in 2026

EXTEND THE LIFE OF YOUR VEHICLE: zMAX Engine & Fuel formulas are simple and easy to use. Micro-lubrication soaks into metal surfaces, which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.

ENGINE EFFICIENCY: Add zMAX Engine Formula to gain efficient combustion resulting in more power. Use the engine treatment at your routine oil change or every 6k miles to reduce engine wear, lower emissions and keep your engine running smoothly.

FUEL CONDITIONER: Pour zMAX Fuel Formula in the fuel tank to lubricate and maintain a clean fuel injector system. It improves fuel efficiency and performance and conditions the pumps and nozzles reducing carbon residue from the valves or pistons.

EXTEND THE LIFE OF YOUR ENGINE: zMAX Micro-lubricant Engine Formula is simple and easy to use. Formula soaks into metal surfaces, which improves lubricity and reduces deposit build-up while boosting performance and protecting vital parts in your vehicle.

ENGINE EFFICIENCY: Perfect to use in new and used gasoline or diesel engines with each oil change. Easily pour zMAX into the engine oil to gain efficient combustion resulting in more power.

IMPROVES FUEL MILEAGE: Make zMAX a part of your car or truck’s routine maintenance! Add the cost-saving and eco-friendly engine treatment to your vehicle every 6k miles to reduce engine wear, lower emissions and keep your engine running smoothly.

EXTEND THE LIFE OF YOUR VEHICLE: zMAX Engine & Fuel formulas are simple and easy to use. Micro-lubrication soaks into metal surfaces, which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.

ENGINE EFFICIENCY: Add zMAX Engine Formula to gain efficient combustion resulting in more power. Use the engine treatment at your routine oil change or every 6k miles to reduce engine wear, lower emissions and keep your engine running smoothly.

FUEL CONDITIONER: Pour zMAX Fuel Formula in the fuel tank to lubricate and maintain a clean fuel injector system. It conditions the pumps and nozzles reducing carbon residue from the valves and pistons while improving fuel efficiency and performance.

EXTEND THE LIFE OF YOUR VEHICLE: zMAX Multi-Purpose Formula is simple and easy to use. Micro-lubrication soaks into metal surfaces which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.

ENGINE EFFICIENCY: Use the All Purpose Formula to help to restore the combustion valve and piston ring sealing resulting in a smoother running motor and more power. Reduces engine wear and lowers emissions which improves fuel efficiency and performance.

FUEL & TRANSMISSION CONDITIONER: Helps clean varnish in valve bodies for smoother shifting, lubricates the injector system and conditions pumps & nozzles while reducing carbon residue from valves and pistons. Perfect for manual or automatic transmissions

EXTEND THE LIFE OF YOUR VEHICLE: zMAX Heavy Duty Application is simple and easy to use. Micro-lubrication soaks into metal surfaces which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.

ENGINE EFFICIENCY: Helps to restore the combustion valve and piston ring sealing resulting in a smoother running motor and more power. Helps to reduce engine wear and lower emissions on large engines, trucks, marine vessels and construction equipment

FUEL CONDITIONER: Provides continuous lubrication on moving parts. It conditions the pumps and nozzles reducing carbon residue from the valves and pistons. Improving fuel efficiency and performance for large gas or diesel vehicles and engines.

EXTEND THE LIFE OF YOUR VEHICLE: zMAX Micro-lubricant is simple and easy to use. The formula soaks into metal surfaces, which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.

FUEL SYSTEM CONDITIONER: Add the treatment every 6k miles to your gas tank to clean the fuel injector system. The multipurpose formula conditions the pumps and the nozzles while reducing carbon residue from the valves and pistons to restore performance.

FUEL SYSTEM EFFICIENCY: Make zMAX a part of your car or truck’s routine maintenance! Reduce engine wear, boost performance and improve fuel efficiency for gas or diesel vehicles. This cost saving 4-pack lowers emissions, is eco-friendly and USA-Made.