Best Diesel Treatment 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.

Helps your entire fuel system run smoother and last longer

Cleans fuel injectors and carburetor passageways

Cleans intake valves and chamber deposits

Safe to use in all diesel engines including agricultural and marine

Safe to use in all diesel fuel, including ultra low sulfur diesel and bio-diesel

Keeps diesel fuel fresh, for quick easy starts

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.

Cleans Fuel System – Deeply cleans any diesel engine’s fuel system including injectors, cylinders, fuel lines, tank, and tank in one fuel treatment lasting up to 6,000 miles

Cleans Fuel Injectors – Safely removes and prevents Internal Diesel Injector Deposits (IDIDs), External Diesel Injector Deposits (EDID’s) and other forms of varnish and deposits

Boosts Cetane – Increases cetane by up to 7 points after the fuel system is fully cleaned, for an even more effective boost in combustion, fuel economy, and engine power while reducing DPF regens

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.

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

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

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

Diesel hi-test, cetane boost

Flash point: 63.0 degrees_celsius

Regular use keeps the fuel system in perfect working order.

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

Four Pack- Each 10.1oz bottle treats 100 gallons

Formulated to address issues with modern diesel fuels

Incorporates Archoil's proven combustion modifier technology and a strong cetane boost to increase power and response

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

GROUNDBREAKING: Made in the USA – TriboTEX is a revolutionary engine oil additive. It contains synthetic nanoparticles developed with funding from the U.S. Department of Energy, NASA, & the National Science Foundation.

QUIETER & SMOOTHER PERFORMANCE: Reverses wear in bearings by building a diamond-like carbon coating.

UNIVERSAL: Compatible with all types of motor oil and can be used in gas or diesel engines. Use for both old and new cars. It is an excellent engine booster.

A powerful and safe way to eliminate damaging sludge and gum from aged or contaminated fuel tanks

Unclog fuel lines while rejuvenating old, stale gasoline and diesel fuel

Does not contain any chemical strippers, alcohol or detergents and is safe for use in all engines