Best Diesel Fuel Additives in 2026

Cleans and Lubricates Fuel System: The product contains a blend of detergents and additives that help to clean and lubricate the fuel system, including the fuel injectors, carburetor, and combustion chamber.

Improves Fuel Economy: The product can help to improve fuel economy by removing deposits and contaminants from the fuel system and improving the efficiency of fuel combustion.

Reduces Emissions: By improving fuel combustion, the product can also help to reduce exhaust emissions, including harmful pollutants such as carbon monoxide and nitrogen oxides.

IMPROVES TOWING POWER: Helps breakdown and remove performance robbing deposits from the entire fuel system

IMPROVES ACCELERATION: Helps boost catane up to 7 points - improving efficency and throttle response

CLEANS AND LUBRICATES: Treats turbos, fuel injectors, pistons, and combustion chamber components

Helps clean build-up of deposits through the entire fuel system

Helps clean pre-existing internal diesel injector deposits (idroid)

Helps restore cetane boost, improving combustion for reduced emissions and improved cold starting

It is tuned-up in a bottle

Cleans and lubricates the fuel system

Neutralizes low sulfur fuel problems

MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less.

IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XL Xtreme Lubricant formula. This diesel fuel additive has been shown to enhance fuel mileage, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for summer driving.

CLEANS INJECTORS: When your fuel injectors build up with residue, your engine doesn’t run as efficiently. Opti-Lube XL Xtreme Lubricant formula cleans injectors and helps prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape.

Anti-Gelling Formula - Reduces the formation of wax crystals in diesel fuel during cold weather, to keep fuel flowing smoothly and prevent it from clogging the system or fuel filter

Improves Cold Starts - Significantly enhances cold-weather performance and disperses moisture to prevent fuel line freeze-ups, even in temperatures as low as -40 degrees Fahrenheit

Keeps Fuel System Healthy - Acts as a fuel injector cleaner and lubricity additive to reduce engine wear and keep your vehicle healthy, efficient, and performing at peak capacity

Helps your entire fuel system run smoother and last longer

Cleans fuel injectors and carburetor passageways

Cleans intake valves and chamber deposits

Prevent sludge and sediment formation

Clean & lubricate entire fuel system

Protect against corrosion

Prevents Fuel From Gelling - Howes Diesel Treat is the nation’s most trusted anti-gel. Its special formula has been tested and proven time and again to prevent gelling in even the coldest weather. Owners of all types of diesel vehicles and equipment rely on the Howes family’s guaranteed product to keep them going all winter long.

Adds Lubricity - Diesel Treat helps protect against today’s Ultra Low Sulfur Diesel (ULSD) fuels by providing added lubricity to injectors, pumps, and upper cylinders. In doing so, it extends the life and increases the performance of diesel engines of all types.

Prevents Deposits - More than just an anti-gel, Diesel Treat also contains a specialized detergent package to help prevent fuel injector deposits. Carbon deposits on diesel injector systems can cause loss of engine power and other issues. Preventing these helps to improve performance and fuel economy, saving you money.

Motor oil additive - Liqui Moly MoS2 anti-friction (300 ml. Can).Fit Type: Universal

Forms High load-bearing film of lubricant on all friction surfaces

You will be surprised at how much better your engine sounds and how controlled it will be even at very high RPM

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.

Treats Up To 25 Gallons ps, lost acceleration and rough idling for improved performance

Jet fuel serves as the carrier for the active ingredien Helps Recover Lost Mpg And Reduce Exhaust Emissionst nts, creating a high-quality additive for easy auto care

Add this fuel injector treatment to your vehicle regularly when you fill your gas tank Friction modifier in the fuel additive combats upper cylinder friction

Restores/Increase Horsepower – detergents clean deposits in the injection system

Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%

Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise

The Archoil Ultimate Diesel Kit - Includes three best-sellers at a big discount

AR9100 Friction Modifier (16oz)

AR6500 Diesel Treatment (40oz) - Treats 400 Gallons (Use at every fill-up)

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

Adds Protection – Increases fuel lubricity by up to 56% for an added layer of protection that keeps fuel pumps and injectors from unnecessary damage or failure

No Harmful Ingredients – LX4 is formulated without harmful solvents or alcohol making it a safe and effective fuel treatment for all systems and engines

Extends Fuel System Life – Protects any fuel system from harsh ethanol or diesel fuels and maintains a smoothly working engine and fuel system, keeping it healthy for even longer

Prevents fuel gelling

Protects against fuel-filter icing

Boosts cetane for faster cold starts

Restores/Increase Horsepower: detergents clean deposits in the injection system

Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent

Cetane Improver improves combustion resulting in better engine starting, running and reduced noise

Approved by Original Equipment Manufacturers (OEMs)

Five times more lubricating content than other Stanadyne additives

Recommended when excessive wear is a problem

Optimizes engine horsepower and performance - for use in all diesel and gasoline engines

Improves fuel economy by reducing friction in your engine - Protects and extends oil life by 30%

Reduces wear on metal components, thus increasing part life / Eliminates lifter and other objectionable noise on startup, especially in cold weather

Dura Lube Engine Treatment immediately helps your engine run cooler and quieter by reducing heat and friction a major cause of engine sludge

Dura Lube offers four times more wear protection than your lubricants alone and contains no solid particles like PTFE, lead, molybdenum, or graphite

For gas and diesel engines, compatible with synthetic and non-synthetic oils. Replace one quart of motor oil with Dura Lube Advanced Engine Treatment at every oil change

Directions: Add about 1 ounce per 10 gallon of gasoline or Diesel fuel at least every 3rd to 4th fill-up on most passenger vehicles; larger engines use same amount every fill-up

Motorkote fuel optimizer is safe for use in all catalytic converters, emissions systems and diesel particulate filter

Cleans fuel system and is a great storage solution for winterizing tanks and equipment

Includes AR6500 Diesel Treatment (40 oz)

Includes AR6400-D Diesel Fuel System Cleaner

Restore key fuel system components - injectors, turbo & dpf

Restores/Increase Horsepower: detergents clean deposits in the injection system

Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent

Cetane Improver improves combustion resulting in better engine starting, running and reduced noise

Contains one application of oil and fuel system UV leak detection dye

For use in engine oil transmissions power steering systems and gas and diesel fuel systems

Compatible with all weights of petroleum based lubricant

Adds Up To 2.5x More Lubricity - With more lubricity than any other Howes product and many on the market, Diesel Defender is the ultimate choice for heavy duty vehicles. It provides protection by significantly reducing wear scars, with independent lab* results confirming Defender treated fuel outperformed the US (520mm) and more stringent European (460mm) standards. *via the wear scar test for ASTM D975 High Frequency Reciprocating Rig (HFRR)

Cleans Fuel Injectors - Uses superior IDX4 Detergent to attack and destroy even the toughest carbon deposits. When used as directed, Diesel Defender is designed to clean the entire fuel system within three treatments and prevent future deposits from forming. The removal of these deposits keeps the diesel fuel system performing optimally and increases power.

Increased Fuel Economy Guaranteed - By safely removing water, Diesel Defender leaves only pure fuel to burn. Your clean injectors then allow for a steady spray pattern, so none of that fuel is wasted. When used regularly, Diesel Defender guarantees a minimum 5% increase in fuel economy.

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.

Greatly Improves Starting In Cold Weather and Dissolves Stiction in Powerstroke Diesels.

Increases Efficiency, Horsepower, Torque & Lubrication Service Life.

REV X is safe for all Soft and Exotic Metals.

Treats 400 Gallons of Fuel - Maximizes lubrication for all diesel engines to 4 times the minimum required amount.

Replaces missing lubricants that diesel engines need that are not present in ULSD and Bio-Blend Diesel fuels.

Provides the highest cetane boosts on the market, 12 point maximum cetane increase.

Eliminates water and water-related problems