Best Diesel Additives of 2025
Last updated on 18/09/2025
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Best Choice
1
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)
Archoil
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Archoil
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)
Why we love it
- Transforms diesel into Super Fuel.
- Ensures maximum engine performance.
- Resolves potential engine problems.
Main Highlights
- EXCEPTIONAL HIGH-PERFORMING SUPER DIESEL FUEL. AR6900-D MAX converts low-quality supermarket diesel into high-performing Super Diesel Fuel using a carefully selected blend of pure 2-EHN cetane improver, multiple detergents, ester lubricant, stabiliser and combustion catalyst.
- HIGHLY CONCENTRATED FORMULATION with no fillers. 100% Active Ingredients and manufactured in the UK. 1ml Treats 1L of Diesel Fuel. 1L bottle treats up to 1,000L of fuel.
- TRANSFORMS ALL DIESEL ENGINES GUARANTEED. Improved Cold Start, Eliminates Diesel Knock, Fuel System Cleaner, Fuel Injector Cleaner, Carbon Cleanr, DPF Cleaner, EGR Valve Cleaner, CAT Cleaner, Turbo Cleaner and Exhaust cleaner.
- MAXIMUM ENGINE PERFORMANCE AND FUEL ECONOMY. This diesel additive maintains & improves engine pickup, performance and fuel economy. This diesel additive also lowers harmful exhaust emissions and exhaust particulates.
- RESOLVES ENGINE PROBLEMS. Multiple detergents and post-combustion fuel-borne catalysts deliver a proprietary blend of Professional Grade Cleaning. Now you can reduce the chance of engine problems while enjoying a smoother and more responsive engine.
- CLASS LEADING CETANE IMPROVER AND ESTER LUBRICANT using the highest purity 2-EHN and proprietary ester lubricant delivering below 290 on the HFRR scar wear test.
- CUSTOMER SATISFACTION IS OUR PRIORITY. Feel free to contact us if you have any query regarding this diesel cleaner. All Archoil fuel cleaners include professional support and Performance and Emissions Pass Guarantee. Over a decade of success and trusted by professionals.
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Value for Money
2
LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1
Liqui Moly
11% OffFree Shipping
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Liqui Moly
LIQUI MOLY Cera Tec 3721 I Ceramic Wear & Tear Protection for Petrol & Diesel Engines I Smoother Engine Performance, Less Friction & Lower Fuel Consumption I Ceramic Additive 300 ml Pack of 1
11% OffFree Shipping
Why we love it
- Smoother engine performance guaranteed.
- Certified effectiveness with TÜV Thüringen.
- Extends engine's lifespan significantly.
Main Highlights
- SMOOTHER ENGINE PERFORMANCE FROM VERY FIRST USE: An engine additive formulated with high-tech ceramic compounds, high thermal resilience. Additive ensures smoother-running engine, extending the engine’s lifespan. Can be used with manual & automatic transmissions. Not suitable for use with wet clutches.
- LOWER FUEL CONSUMPTION and diminished emission of pollutants due to smoother engine operation.
- EASY TO ADD DURING OIL CHANGES: The 300 ml bottle is sufficient for up to 5 liters of engine oil. Shake well before use and add to fresh oil. Can be mixed with all gear & engine oils on the market. Long-lasting performance, up to 50,000 km.
- CERTIFIED EFFECTIVENESS proven by TÜV Thüringen: Chemical components in Cera Tec smooth out rough surfaces, the ceramic particles fill in uneven surface imperfections. Prevents direct contact of all metal parts, reducing friction and wear & tear. Turbo & Cat tested.
- EVERYTHING THAT DRIVES WORKS BETTER WITH LIQUI MOLY: We manufacture over 4,000 products: engine oils, additives, vehicle care, chemical servicing and repair, adhesives and sealing products. Our products are currently distributed to over 150 countries worldwide. They are popular everywhere, ensuring a superior driving experience and improved engine performance.
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3
HYDRA DPB-100 Diesel Power Blast - Diesel Fuel System Cleaner | Diesel Injector Cleaner with Diesel Fuel Additive | 1 litre treats 1,000L
HYDRA
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HYDRA
HYDRA DPB-100 Diesel Power Blast - Diesel Fuel System Cleaner | Diesel Injector Cleaner with Diesel Fuel Additive | 1 litre treats 1,000L
Why we love it
- Boosts fuel and engine performance.
- Ideal for extensive diesel use.
- Ensures customer satisfaction guarantee.
Main Highlights
- Inexpensive Quality Product: Hydra DBP-100 is a diesel additive that helps in Diesel cleaning. This fuel injector cleaner turns the cheapest fuel into premium fuel, but at a much better cost than buying at a filling station. Perfect for cold starting, smoother engine with better pick-up with reduced diesel knock, smoke and harmful emissions.
- Extensive use: DBP-100 DIESEL FUEL INJECTOR CLEANER is for diesel engines. It is a diesel cleaner and fuel stabiliser, that contains cetane booster, and lubricants. It also contains detergents that clean fuel lines, pumps, injectors, fantastic turbo diesel cleaner, EGR valves, helps keep DPF clean
- Exceptional Performance: Hydra DBP-100 is a high performance cleaning diesel Injector additive. Hydra uses polyetheramine, which creates the best diesel injector cleaner; that removes existing carbon deposits and prevents new formation. It helps restore engine performance and power to as new.
- Perfect Lubricant: The dpf cleaner diesel and regenerator helps in decreased fuel pump, injector and cylinder wear issues. It is low in sulphur and works at low temperatures. The diesel injector cleaner also helps to improve fuel economy. Giving an HFRR wear profile of less than 300.
- Customer Satisfaction: Hydra DBP-100 ensure 100% customer satisfaction for all their products. In case of any query related to the diesel injector cleaner, feel free to contact us. We will try providing a solution to our best capacity.
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4
Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | DPF Cleaner Diesel and Petrol | Flush and clean Engine, Injector and EGR valve
DIPETANE
Free Shipping
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DIPETANE
Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | DPF Cleaner Diesel and Petrol | Flush and clean Engine, Injector and EGR valve
Free Shipping
Why we love it
- Better fuel consumption performance.
- Reduces greenhouse gas emissions.
- Protects injectors against poor fuel.
Main Highlights
- ✅ [ IMPROVE FUEL ECONOMY ] Increase fuel economy by up to 10% due to Dipetane enabling a more efficient and complete fuel burn saving you money.
- ✅ [ DPF CLEANER ] Dipetane is a complete fuel system cleaner it cleans DPF, valves, pistons, injectors and Catalytic convertor helps engine last longer giving complete Engine Flush. Use as Injector Cleaner or EGR valve cleaner for great results. Works alongside Ad Blue and compliments the AdBlue benefits.
- ✅ [ LESS SMOKE ] Dipetane will remove soot and other internal combustion deposits from the engine through the complete combustion process created by Dipetane meaning less exhaust smoke and restores performance.
- ✅ [ FOR ALL ENGINES ] Ideal for all vehicles, Diesel, Petrol or kerosene engines, our unique fuel treatment upgrades all fuels without additives. No detergents, no cetane enhancers, no octane boosters, and no heavy metals. Simply pour it into your fuel tank, and it gets to work right away.
- ✅ [ BEST VALUE ] Our large 1 Litre bottle treats 4 full tanks or 200 Litres of fuel (Petrol, Diesel or Kerosene). There are 10 marked divisions on the side of the 1 litre bottle, each division treats 20 litres of fuel with no danger of overdosing.
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5
Wynn's High Performance Diesel Fuel System Treatment - Enhances Combustion, Improves Acceleration, Reduces Fuel Consumption & Black Smoke - 500ml
Wynn's
10% OffFree Shipping
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Wynn's
Wynn's High Performance Diesel Fuel System Treatment - Enhances Combustion, Improves Acceleration, Reduces Fuel Consumption & Black Smoke - 500ml
10% OffFree Shipping
Why we love it
- Improves engine performance instantly.
- Reduces fuel consumption effectively.
- Protects against oxidation.
Main Highlights
- ✅ IMPROVES COMBUSTION FOR OPTIMAL ENGINE PERFORMANCE: This high-performance diesel treatment is formulated to enhance combustion efficiency immediately upon use. The powerful blend of active ingredients optimises the fuel-to-air ratio, allowing for a cleaner and more complete burn inside the engine. As a result, the engine runs more smoothly and efficiently, leading to improved throttle response and faster acceleration. Enhanced combustion also contributes to a reduction in harmful emissions and particulate matter, resulting in a cleaner exhaust. This makes it particularly effective for vehicles that operate under demanding conditions, where peak engine performance is essential.
- ✅ REDUCES FUEL CONSUMPTION FOR COST-EFFICIENT DRIVING: By promoting more complete combustion, this treatment directly contributes to a reduction in fuel consumption. It maximises the energy extracted from each litre of diesel, helping the engine to deliver better mileage without compromising performance. Whether used in long-distance driving or frequent short trips, this product supports fuel efficiency by optimising the way diesel is burned. The result is lower fuel costs over time and less frequent refuelling. Regular application helps maintain this improved fuel economy, making it a smart choice for fuel-conscious drivers and fleet operators alike.
- ✅ REDUCES BLACK SMOKE FOR CLEANER EMISSIONS: This advanced diesel system treatment addresses one of the most visible signs of inefficient fuel use: black smoke. By improving the combustion process, the treatment drastically reduces unburned hydrocarbons that manifest as dark exhaust. This contributes not only to a cleaner vehicle but also to a more environmentally friendly operation. Vehicles treated with this formula emit noticeably less smoke, which can be a critical factor in passing emission tests or complying with urban environmental regulations.
- ✅ PROTECTS THE FUEL SYSTEM FROM OXIDATION AND CORROSION: The formula includes special additives designed to shield the fuel system from the damaging effects of oxidation and corrosion. Diesel engines are particularly susceptible to water contamination and fuel degradation, which can lead to rust, corrosion, and the formation of sludge within the fuel tank and injection system. This treatment provides a protective barrier that inhibits these processes, extending the lifespan of fuel components such as injectors, pumps, and lines. It is especially beneficial in vehicles that are not used regularly, where stagnant diesel may pose a greater risk.
- ✅ TREATS UP TO 70 LITRES WITH ONE 500ML BOTTLE: The concentrated nature of this formula ensures that a single 500ml bottle is sufficient to treat up to 70 litres of diesel fuel. This high-yield ratio makes it a cost-effective solution for those looking to maintain peak engine performance without frequent applications. Suitable for cars, vans, trucks, and other diesel-powered machinery, this treatment integrates seamlessly into routine maintenance schedules. Its easy-to-use format allows it to be poured directly into the fuel tank, ensuring fast action and visible results.
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6
Millers Oils Diesel Power Ecomax Fuel Additive Treatment 500ml 0.5L NEW IMPROVED
Millers Oils
Millers Oils
Millers Oils Diesel Power Ecomax Fuel Additive Treatment 500ml 0.5L NEW IMPROVED
7
STP Diesel Fuel Additive Treatment Bundle, Includes Diesel Injector Cleaner and Ultra 5-in-1 Diesel System Cleaner, Cleans Injectors and Restores Performance For A Smoother Engine, Made in the UK
STP
26% Off
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STP
STP Diesel Fuel Additive Treatment Bundle, Includes Diesel Injector Cleaner and Ultra 5-in-1 Diesel System Cleaner, Cleans Injectors and Restores Performance For A Smoother Engine, Made in the UK
26% Off
Why we love it
- Cleans and restores performance.
- Lowers exhaust emissions.
- Reduces rough idling.
Main Highlights
- STP Diesel Bundle contains STP Diesel Injector Cleaner 200ml and STP Ultra 5-in-1 Diesel System Cleaner 400ml
- Cleans & Unclogs: Powerful STP Diesel Injector Cleaner clears dirty injectors with just one treatment
- Restores Performance: STP Ultra 5-in-1 System Cleaner is our most advanced diesel formula, helping to remove deposits and clear dirty injectors
- Lowers Emissions: A cleaner engine may mean less exhaust emissions and lower fuel consumption
- For All Diesel Engines: Suitable for all diesel engines including DI, IDI and common rail, and catalytic converters
- Quick & Easy: Simply pour the entire bottle of STP Diesel Injector Cleaner or STP Diesel System Cleaner into a full tank
- Reduces Rough Idling: For a smoother engine experience
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8
Fastcar 2 x Redex Diesel System Cleaner (500ml For The Price Of 250ml)
Fastcar
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Fastcar
Fastcar 2 x Redex Diesel System Cleaner (500ml For The Price Of 250ml)
Why we love it
- Extends engine life significantly.
- Enhances fuel efficiency effectively.
- Bonus 500ml bottle included.
Main Highlights
- Extends engine life
- Improves fuel economy
- 100% extra free (500ml bottle)
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9
Wynn's Diesel Turbo Cleaner - Removes Carbon Build-Up & Frees Sticking Vanes - Cleans Diesel Oxidation Catalyst & EGR Valve - Restores Engine Power & Reduces Soot Emissions - 500ml
Wynn's
Free Shipping
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Wynn's
Wynn's Diesel Turbo Cleaner - Removes Carbon Build-Up & Frees Sticking Vanes - Cleans Diesel Oxidation Catalyst & EGR Valve - Restores Engine Power & Reduces Soot Emissions - 500ml
Free Shipping
Why we love it
- Clears blocked diesel turbochargers efficiently.
- Improves engine power significantly.
- Extends turbo and catalyst life.
Main Highlights
- ✅ CLEARS BLOCKED DIESEL TURBOCHARGERS: Designed to effectively remove carbon build-up and free sticking vanes without the need for dismantling, this powerful formula ensures optimal performance of diesel turbochargers. Over time, carbon deposits accumulate on the turbine, leading to reduced efficiency and potential turbocharger failure. By dissolving these stubborn residues, the product restores proper airflow, allowing the turbo to function smoothly. The seamless operation of the turbocharger translates into improved acceleration, fuel efficiency, and overall vehicle performance.
- ✅ REMOVES RESIDUES FROM DIESEL OXIDATION CATALYST & CLEANS EGR VALVE: Residue buildup in the Diesel Oxidation Catalyst (DOC) and the Exhaust Gas Recirculation (EGR) valve can significantly impact engine efficiency and emissions. This advanced cleaning solution effectively dissolves deposits, ensuring these essential components remain free from obstructions. The DOC plays a crucial role in reducing harmful emissions, while the EGR valve helps control nitrogen oxide levels. When clogged with soot and carbon deposits, both systems become less effective, leading to increased fuel consumption and reduced engine efficiency.
- ✅ RE-ESTABLISHES ENGINE POWER & THROTTLE RESPONSE: A clogged turbocharger and EGR valve can severely hinder an engine’s performance, leading to sluggish acceleration and power loss. This specialised cleaning formula helps restore engine power by removing accumulated deposits that interfere with combustion efficiency. By ensuring optimal airflow and fuel combustion, the engine regains its responsiveness, delivering smooth acceleration and improved throttle control. This is particularly beneficial for diesel vehicles that experience performance deterioration due to carbon buildup.
- ✅ EXTENDS TURBO & DIESEL OXIDATION CATALYST LIFESPAN: The buildup of soot and carbon deposits can significantly shorten the lifespan of turbochargers and Diesel Oxidation Catalysts, leading to costly repairs or replacements. This treatment not only cleans but also helps protect these vital components, ensuring they remain in optimal working condition for an extended period. By maintaining cleaner turbo and DOC systems, it prevents premature wear and degradation, reducing the risk of expensive mechanical failures.
- ✅ COMPATIBLE WITH ALL DIESEL ENGINES & BIODIESEL UP TO B30: Designed for versatility, this cleaner is suitable for all diesel engines and compatible with diesel fuels, including biodiesel blends up to B30. It provides a hassle-free solution for maintaining turbocharger and engine cleanliness without requiring extensive mechanical intervention. Simply add the recommended dosage to the fuel tank for a thorough cleaning effect that works while driving. The formulation is safe for all after-treatment systems, ensuring it does not cause damage to components such as catalytic converters, diesel particulate filters, or EGR valves.
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10
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP
Free Shipping
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STP
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
Free Shipping
Why we love it
- Boosts fuel system cleaning.
- Recovers peak engine performance.
- Offers superior engine protection.
Main Highlights
- What You'll Get - 400 ml Diesel Fuel System Cleaner
- Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank
- Restores Power and Performance - Recovers peak engine performance by removing harmful deposits
- Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion
- Reduces Diesel consumption and exhaust emissions - promotes better fuel economy
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