10 Best Diesel Engine Cleaner Additives Reviews

If you’re a diesel vehicle owner, chances are you’ve faced issues like sluggish response, poor fuel economy, or deposits clogging your fuel system. Maintaining your diesel engine’s health is crucial for optimal performance and longevity, but finding the right additive can feel overwhelming with so many options available.

This guide will walk you through the best diesel engine cleaner additives on the market today, highlighting their key features, benefits, and ideal use cases. Whether you’re looking for a quick deep cleaning or ongoing maintenance, you’ll learn what to consider to make a confident, informed choice for your vehicle.

Lucas Oil 10003 Fuel Treatment – The Versatile Fuel Enhancer

Lucas Oil’s Fuel Treatment is renowned for its ability to improve both gasoline and diesel engine performance with a simple pour into the fuel tank. It acts as a comprehensive tune-up in a bottle, making it a popular choice for vehicle owners seeking a straightforward solution to fuel system issues.

This additive cleans and lubricates critical components like fuel injectors, carburetors, and the combustion chamber, ensuring smooth operation and reducing emissions. Its ability to boost fuel economy by burning off excess exhaust emissions not only benefits the environment but also saves you money at the pump. With a reputation as the world’s #1 fuel additive, it’s trusted by many for daily use and preemptive maintenance.

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• The world’s #1 fuel additive for both gasoline and diesel engines
• A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
• Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
• Improves fuel economy by burning excess exhaust emissions
• Increases power and acceleration by improving fuel flow and reducing deposit buildup
• Neutralizes sulfur and other harmful contaminants present in the fuel system
• Increases the life of pumps and injectors
• Prevents rust and corrosion, prolonging the life of engine and fuel system components
• Complies with federal low sulfur content requirements for diesel motor vehicles and non-road, locomotive and marine diesel equipment engines
• Safely replaces the need for lead in older engines without causing harmful effects

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Archoil AR6400-D Diesel Fuel System Cleaner – Deep Cleaning Power

Designed for quick and effective cleaning, Archoil’s AR6400-D offers a concentrated solution that tackles performance-robbing deposits in diesel fuel systems. Simply pour into your tank and drive normally, making it a hassle-free upgrade for regular maintenance.

This 12 oz bottle treats 30-40 gallons of diesel and works rapidly to remove injector deposits, restore spray patterns, and improve response. Additionally, its ability to support DPF (diesel particulate filter) performance reduces regeneration frequency, saving you time and money on repairs. It’s an excellent choice if your diesel engine shows signs of sluggishness or poor emissions.

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• EASY TO USE: Pour into the fuel tank and drive normally; one 12 oz bottle treats 30-40 gallons of diesel. Use every 5,000 miles or as needed
• RAPID-ACTING DEEP CLEAN: Concentrated diesel fuel system cleaner designed to work quickly on performance-robbing deposits to restore the fuel system
• CLEANS INJECTORS FAST: Removes injector deposits and restores spray patterns for smoother running, improved response, and more efficient combustion
• RESTORES DPF PERFORMANCE: Reduces deposit buildup to support a cleaner DPF and reduce regeneration frequency
• TURBO DEPOSIT CONTROL: Reduces deposit buildup that affects turbo response, supporting smoother acceleration and restored boost
• MAINTAIN RESULTS WITH AR6500: Follow up with Archoil AR6500 Diesel Treatment at every fill-up to keep the fuel system clean and address insufficient lubricity and cetane levels in diesel from the pump

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Lucas Oil 10013 Fuel Treatment – Large Volume Maintenance

For those who prefer to keep a supply on hand, Lucas Oil’s gallon-sized fuel treatment offers extended value and consistent performance. It provides the same benefits as the quart-sized version but is ideal for frequent use or larger vehicles.

This additive cleans and lubricates the entire fuel system, including injectors, carburetors, and combustion chambers, promoting better combustion and improved fuel economy. Its ability to burn excess emissions helps reduce environmental impact while ensuring your engine runs smoothly over the long term.

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• The world’s #1 fuel additive for both gasoline and diesel engines
• A great tune-up in a bottle – treats gasoline, diesel fuel and increases MPG
• Cleans and lubricates the fuel system, including fuel injectors, carburetor and combustion chamber
• Improves fuel economy by burning excess exhaust emissions
• Increases power and acceleration by improving fuel flow and reducing deposit buildup
• Neutralizes sulfur and other harmful contaminants present in the fuel system
• Increases the life of pumps and injectors
• Prevents rust and corrosion, prolonging the life of engine and fuel system components
• Complies with federal low sulfur content requirements for diesel motor vehicles and non-road, locomotive and marine diesel equipment engines
• Safely replaces the need for lead in older engines without causing harmful effects

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Hot Shot’s Secret Everyday Diesel Treatment EDT – All-Around Enhancer

The EDT from Hot Shot’s Secret is designed for daily use to keep your diesel engine running efficiently. Its six-in-one formula addresses cetane boost, injector cleaning, lubrication, and rust prevention, making it a comprehensive maintenance additive.

Regular use can improve acceleration, reduce emissions, and extend engine life. Its ability to demulsify moisture and prevent corrosion provides peace of mind, especially in challenging weather conditions or high-mileage applications. This product is suitable for those who want to maintain optimal engine health without complicated procedures.

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• EVERYDAY TREATMENT: Keep your diesel engine in top condition with our EDT that is designed to improve performance & maintain engine health. With regular use, you can ensure your engine runs smoothly & efficiently giving you peace of mind on the road.
• BOOST FUEL ECONOMY: Enhance your vehicle performance with our diesel additive that boosts cetane levels by up to 7 points resulting in better fuel economy & reduced maintenance costs. Say goodbye to poor acceleration & frequent trips to the mechanic.
• FUEL INJECTOR CLEANER: Cleans both internal & external injector deposits, enhances the lubricity of fuel to safeguard the fuel system components, such as the pump & injectors to increase engine longevity while also acting as a fuel system cleaner.
• PREVENTS RUST & CORROSION: While demulsifying moisture & adding stability to fuel by preventing oxidation & degradation, it also provides a reliable solution for protecting fuel systems from the damaging effects of rust & corrosion.
• EASY TO USE: Use at every fill-up, 1 oz. or 2oz. (for more cetane and lubricity boost) for every 25 gallons of diesel, this product is easy to use! Just pour it into your diesel fuel tank during your next fill up.

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Archoil Diesel Fuel System Kit – Complete Restoration Solution

This comprehensive kit from Archoil combines a deep-cleaning treatment with ongoing protection, making it ideal for comprehensive restoration of diesel engines. Use the AR6400-D first for a thorough clean, then follow up with the AR6500 for continuous protection.

It treats up to 400 gallons, suitable for all diesel vehicles, including modern HPCR systems. The product effectively removes injector deposits, restores response, and improves overall efficiency, helping your engine run smoother and more reliably over time.

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• TWO-STEP FUEL SYSTEM RESET: Includes AR6400-D Diesel Fuel System Cleaner + AR6500 Diesel Treatment (40 oz) for a complete clean-and-maintain solution
• HOW IT WORKS: Use AR6400-D first for a deep clean (12 oz treats 30-40 gallons), then use AR6500 at every fill-up for ongoing protection (40 oz treats up to 400 gallons)
• FOR ALL DIESEL ENGINES: Suitable for all diesel vehicles and equipment, including modern HPCR systems
• CLEANS INJECTORS & RESTORES RESPONSE: Removes injector deposits and restores spray patterns for smoother running, improved response, and more efficient combustion
• IMPROVES LUBRICITY (ASTM D6079): AR6500 is tested to improve lubricity by 43% to protect fuel system components, including wear-sensitive parts like the CP4 pump
• BOOSTS CETANE UP TO +8: AR6500 raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability
• SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency – supporting performance and fuel economy
• KEEPS TURBO CLEAN: Reduces deposit formation that impacts turbo response for restored boost and smoother acceleration

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Hot Shot's Secret Diesel Extreme – Heavy-Duty Fuel System Cleaner

Diesel Extreme from Hot Shot’s Secret is designed to deliver a comprehensive cleaning of your entire fuel system. It removes deposits, water, and sludge while improving cetane levels for smoother combustion and better engine response.

Its advanced formula with cumene enhances fuel quality, making starting easier, acceleration stronger, and emissions lower. The 16 oz size treats multiple tanks, providing long-lasting protection that keeps your diesel engine performing at its best.

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• COMPLETE FUEL SYSTEM CLEANER: Diesel Extreme works through your entire fuel system removing harmful deposits, water, and sludge while improving cetane for smoother, more efficient combustion.
• PERFORMANCE BENEFITS: Results in easier starts, stronger acceleration, and reduced emissions for optimal diesel engine performance.
• PREMIUM FORMULA: Advanced diesel fuel additive containing cumene that enhances fuel quality and combustion efficiency.
• CONVENIENT SIZE: 16 oz bottle treats multiple tanks, providing long-lasting fuel system protection and maintenance.
• MADE IN USA: Manufactured in the United States with dimensions of 7.80 x 2.70 x 2.70 inches and weighs 1.04 pounds.

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MotorPower Care DPF Filter Purge Additive – Soot & Carbon Cleaner

Specifically targeting diesel particulate filters, this two-pack from MotorPower Care helps reduce soot buildup and regenerate the DPF more efficiently. Each 16.9 fl oz bottle is designed to keep your filter clean, extending its lifespan and improving fuel economy.

Regular use prevents costly regeneration cycles and maintains optimal exhaust flow. It’s suitable for all diesel engines, making it a practical choice for owners who want to protect their investments and keep emissions in check.

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• Keep DPF clean
• Diesel additive
• Maintaining a clean DPF improves fuel economy
• Keep DPF clean from Carbon & Soot

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Archoil AR6500 Diesel Treatment – Ongoing Protection & Performance

Archoil’s AR6500 offers a simple, effective way to enhance your diesel fuel with each fill-up. Its long-neck design makes pouring straightforward, and one 40 oz bottle treats up to 400 gallons, making it a convenient choice for regular maintenance.

This additive improves lubricity, increasing the longevity of sensitive fuel system parts like the CP4 pump. It also boosts cetane up to 8 points, ensuring smoother combustion, better power, and lower emissions, especially in older or high-mileage engines.

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• EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons
• FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment – light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems)
• IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump
• BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is often 40–45
• CLEANS INJECTORS: AR6500's detergent package removes injector deposits and restores spray patterns for improved atomization, supporting better performance and fuel economy
• SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency – restores performance, fuel economy, and extends DPF lifespan
• KEEPS TURBO CLEAN: Helps reduce fuel soot and deposit formation that impacts turbo response, restoring boost and smoother acceleration

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Rislone DEF Crystal Clean – Diesel Emissions System Care

Designed for diesel vehicles with SCR systems, Rislone’s DEF Crystal Clean helps prevent crystallization deposits that can clog emissions systems and reduce efficiency. Regular use every 5,000 miles keeps your SCR, DOC, and DPF systems clean and functioning properly.

This additive is safe for all vehicles with DEF or AdBlue systems and does not void warranties. It is especially beneficial for vehicles frequently driven at low speeds or with short trips, where buildup is more common.

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• Excellent for diesel vehicles driven regularly at slow speeds, low loads, short durations or make frequent stops as these are more prone to having the problem of crystallization deposit build up in the SCR system.
• Regular use every 5,000 miles not only keeps the system clean, but works to prevent the white crystallization issues from returning.
• Will not void manufacturer’s new vehicle warranty. Specifically designed and safe to use on vehicles which have DOC catalytic converters, DPF particulate filters, SCR selective catalytic reduction devices, ASC ammonia slip catalyst or DEF / AdBlue systems.
• Works with all AdBlue, Aria 32 (Automotive Nitrogen Oxide Liquid Reducing Agent), AUS 32 (Aqueous Urea Solution), BlueHDi, BlueTEC, Cummins, DEF UREA, Duramax, EcoDiesel, PowerStroke, TDI Clean Diesel, and many more.
• DEF Crystal Clean is specifically designed to only be installed in the Diesel Exhaust Fluid / AdBlue tank which usually has a blue cap. Do not add to the diesel fuel tank.

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Chevron Techron D Concentrate Diesel Fuel System Cleaner – Deposit Remover

Chevron’s Techron D is formulated to clean and restore diesel fuel systems, helping remove pre-existing deposits and prevent future buildup. Its cetane-boosting properties improve combustion efficiency, leading to cleaner emissions and better cold starts.

This concentrate is ideal for diesel owners looking to enhance drivability, reduce noise, and maintain optimal engine responsiveness. It’s easy to use and suitable for regular maintenance or as a troubleshooting aid.

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• Helps clean build-up of deposits through the entire fuel system
• Helps clean pre-existing internal diesel injector deposits
• Helps restore cetane boost, improving combustion for reduced emissions and improved cold starting
• Helps restore engine responsiveness, drivability and engine noise
• Helps to prevent fuel injector sticking and failure through regular recommended treatment

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Buyer’s Guide: What to Consider

When choosing the best diesel engine cleaner additive, it’s important to consider your specific vehicle needs, usage frequency, and the type of cleaning or protection required. The right product can help improve fuel efficiency, reduce emissions, and extend your engine’s lifespan by removing harmful deposits and preventing future buildup.

This section will guide you through the key factors to look for, helping you make an informed decision that aligns with your maintenance goals and budget.

• Compatibility with Engine Type: Ensure the additive is suitable for your specific diesel engine, whether it's a light-duty vehicle, a heavy-duty truck, or a piece of equipment. Check the product details to confirm compatibility with modern HPCR systems or older engines.
• Cleaning versus Maintenance: Decide if you need a potent deep cleaner to address existing deposits or a more routine additive to prevent issues. Deep cleaning products are ideal for restoring performance, while maintenance additives keep your engine running smoothly over time.
• Coverage and Treatment Amount: Look at how many gallons each product treats to determine value and convenience. Some products treat large volumes, making them more economical for frequent use or larger tanks.
• Additional Benefits: Consider additives that offer extra advantages like cetane boosting, lubricity enhancement, or emissions system cleaning, depending on your vehicle’s needs.
• Ease of Use: Choose products with straightforward application methods—pour-and-go formulas are generally preferred for convenience, especially for regular use.
• Price and Value: Compare the cost per treatment or per gallon to find the best balance between affordability and effectiveness, especially for ongoing maintenance routines.
• Brand Reputation and Reviews: Select reputable brands with positive user feedback and proven performance records to ensure reliability and peace of mind.

Conclusion

Maintaining a clean and efficient diesel engine is essential for optimal performance and longevity. Using the right additive not only helps in keeping your fuel system free of deposits but also enhances overall engine response and fuel economy.

Based on your specific needs—whether deep cleaning, routine maintenance, or emissions system care—there’s a suitable product for you among these top-rated options. Investing in a quality diesel engine cleaner additive will pay off in smoother operation, lower emissions, and potentially reduced repair costs in the long run.