10 Best Fuel System Cleaner Diesel in The UK

Last updated on 12/08/2025
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1
9.9
Exceptional
Archoil AR6400-D MAX Pro DPF Cleaner Diesel Fuel System, Diesel Injector Cleaner, Turbo, CAT Cleaner Concentrate - High Strength Carbon Removal & Exhaust Emissions Reduction for MOT Pass (400ml)
Archoil
Archoil AR6400-D MAX Pro DPF Cleaner Diesel Fuel System, Diesel Injector Cleaner, Turbo, CAT Cleaner Concentrate - High Strength Carbon Removal & Exhaust Emissions Reduction for MOT Pass (400ml)
Why We Love It
  • Improves fuel economy significantly.
  • Ensures thorough engine cleaning.
  • Offers full ester lubrication.
Main Highlights
  • FAST, SAFE AND THOROUGH CLEANING. Suitable for all diesel engines, AR6400-D engine MAX contains a proprietary blend of carefully selected diesel additives / detergents and acts as a diesel particulate filter cleaner, egr cleaner and entire fuel system cleaner (fuel injectors, fuel filter, fuel pump, fuel lines). Also cleans engine, combustion area, glow plugs, turbo, DPF and catalytic converter.
  • RESOLVES AND PREVENTS RUNNING ISSUES. This diesel engine cleaner helps free a problematic EGR and rapidly reduces harmful emissions and unwanted smoke from the exhaust. Resolve engine running issues and restore lost engine performance and fuel economy. Enjoy a smoother and more responsive engine.
  • RESTORES ENGINE PERFORMANCE AND IMPROVES FUEL ECONOMY. This diesel fuel additive / diesel cleaner has been shown to enhance fuel mileage year round, by acting as a diesel fuel system cleaner, fuel injector cleaner, diesel turbo cleaner and catalytic converter cleaner.
  • FULL ESTER LUBRICATION. Additional diesel treatment functions include a proven Cetane Improver using the highest purity 2-EHN, proprietary ester lubricant, water remover and much more.
  • CUSTOMER SATISFACTION IS OUR PRIORITY. Feel free to contact us if you have any query regarding this petrol cleaner. All Archoil fuel cleaners include professional support and Performance and Emissions Pass Guarantee. Over a decade of success and trusted by professionals.
9.9
Exceptional
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2
9.9
Exceptional
Save 4%
WYNNS Professional Diesel Injector Cleaner - One-Tank Solution for Optimal Fuel System Performance - Cleans & Lubricates Injectors - Improves Fuel Economy & Engine Efficiency - 500ml
Wynn's
WYNNS Professional Diesel Injector Cleaner - One-Tank Solution for Optimal Fuel System Performance - Cleans & Lubricates Injectors - Improves Fuel Economy & Engine Efficiency - 500ml
4% Off
Why We Love It
  • Powerful one-tank cleaning solution.
  • Restores injector efficiency instantly.
  • Improves fuel economy significantly.
Main Highlights
  • ✅ POWERFUL ONE-TANK CLEANING FOR DIESEL ENGINES: Formulated to deliver a deep and effective cleaning process in just one tank, ensuring that diesel engines operate at their peak performance. Designed to target and remove stubborn deposits, this advanced formula works efficiently to clean injectors and maintain optimal fuel delivery. It also contributes to keeping the EGR valve and turbo clean, preventing blockages that could impact engine efficiency. Suitable for all types of diesel engines, including high-pressure common rail and pump injector systems, this one-tank solution ensures thorough cleansing while optimising fuel combustion and engine power.
  • ✅ CLEANS AND PROTECTS INJECTORS FOR OPTIMAL SPRAY PATTERN: Instantly eliminates harmful carbon deposits and residues that accumulate over time in injectors, restoring them to their original efficiency. By maintaining an ideal injector spray pattern, this treatment ensures precise fuel atomisation, resulting in improved combustion, lower emissions, and better fuel economy. The enhanced spray pattern promotes smoother engine operation, reducing vibrations and noise. Continuous use helps maintain the cleanliness of injectors, ensuring consistent fuel delivery and long-term engine reliability, making it an essential solution for preserving diesel engine health.
  • ✅ LUBRICATION AND PROTECTION FOR INJECTION SYSTEMS: Provides superior lubrication to critical fuel system components, reducing wear and extending the lifespan of injectors and pumps. This protective action is especially beneficial for high-pressure injection systems, such as TDI, HDI, and other advanced diesel technologies, which require precision and durability to function effectively. By forming a protective barrier, this formulation minimises friction and enhances the smooth operation of fuel delivery components, preventing premature wear and costly repairs.
  • ✅ RESTORES ENGINE PERFORMANCE AND PREVENTS STARTING ISSUES: Designed to bring engines back to their optimal working condition by eliminating contaminants that hinder performance. It helps to restore lost power, ensuring smooth acceleration and a steady idle. Additionally, this treatment minimises engine hesitation, misfires, and irregular combustion, providing a more reliable driving experience. By eliminating injector clogging and deposit buildup, it enhances combustion efficiency, making cold starts easier and more dependable.
  • ✅ IMPROVES FUEL ECONOMY AND ENHANCES ENGINE RELIABILITY: Contributes to better fuel efficiency by ensuring a clean and well-maintained fuel system. With enhanced injector performance and optimised combustion, diesel engines operate more efficiently, reducing fuel consumption and operational costs. The increased fuel economy leads to lower emissions, making it an environmentally conscious choice. Additionally, this treatment enhances engine reliability by preventing unexpected breakdowns related to fuel system issues, offering peace of mind and long-term performance benefits for diesel vehicle owners.
9.9
Exceptional
Save 4%
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3
9.7
Exceptional
JLM Diesel Extreme Clean | Strong All-In-One Fuel System & Engine Cleaner, 1L (J02360)
JLM
JLM Diesel Extreme Clean | Strong All-In-One Fuel System & Engine Cleaner, 1L (J02360)
Why We Love It
  • Boosts fuel efficiency effectively.
  • Enhances long-term engine health.
  • Easy to use product.
Main Highlights
  • A HIGH-PERFORMANCE ADDITIVE: Cleaning & maintenance for the entire diesel fuel system, engine & exhaust. Effectively removes carbon deposits, gum & varnish from diesel injectors.
  • FUEL SYSTEM CLEANING: Dissolves soot deposits in the fuel, engine & exhaust system, whilst detoxifying & lubricating the entire diesel fuel system, for superior engine performance.
  • ENGINE HEALTH & POWER: The all-in-one cleaner optimises the performance of the turbocharger & EGR valve, for maximum engine power. It stabilises the fuel in the tank & protects cleaned parts against future deposits, for long-term engine health.
  • BOOST FUEL EFFICIENCY: The cetane booster helps optimise fuel consumption for an effective performance. Promotes regeneration to help clean the diesel particulate filter, which helps to restore fuel efficiency, improve power output & reduce emissions.
  • EASY TO USE: Add to the fuel tank & it will start working immediately; suitable for all diesel engines. Regular use can extend the service life of your diesel engine, reducing maintenance costs & repairs.
9.7
Exceptional
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4
9.6
Superb
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Cataclean Diesel Fuel & Exhaust Cleaner Catalytic Converter Valve & Injector Cleaner 500ml
Cataclean
Cataclean Diesel Fuel & Exhaust Cleaner Catalytic Converter Valve & Injector Cleaner 500ml
11% OffFree Shipping
Why We Love It
  • Optimizes engine performance.
  • Reduces emissions significantly.
  • Enhances fuel economy.
Main Highlights
  • VEHICLE MAINTENANCE > Safe for all engines, Cataclean original 8-in-1 engine cleaning system has been scientifically formulated to help your vehicle engine run better and last longer. Adding Cataclean as part of your regular vehicle maintenance routine to remove carbon build up improves fuel economy, reduce emissions, restores performance and protects catalytic converters
  • CLEANS & PROTECTS > Cataclean cleans, restores & protects the fuel tank and lines, fuel injectors, catalytic convertors, diesel particulate filters (DPF), exhaust gas recirculation valves, oxygen sensors, combustion chambers & intake and exhaust valves
  • REDUCE EMISSIONS > Regular use of Cataclean engine cleaning system can reduce emissions by up to 60% which can help prevent to MOT emissions failures and reduce air pollution
  • ENGINE PERFORMANCE > Using Cataclean fuel system cleaner restores engine performance, reduces vehicle maintenance costs and reduces fuel consumption, improving MPG fuel efficiency
  • USAGE > Add 500ml of Cataclean fuel additive per 15 litres of fuel every three months for optimum results
9.6
Superb
Save 11%
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5
9.5
Superb
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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
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
25% 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
9.5
Superb
Save 25%
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6
9.4
Superb
Wynn's Total Action Diesel Cleaner – All-in-One Fuel and Exhaust System Cleaner – Protects Injectors, Valves, Turbo, DPF, EGR & Combustion Chamber – 325ml
Wynn's
Wynn's Total Action Diesel Cleaner – All-in-One Fuel and Exhaust System Cleaner – Protects Injectors, Valves, Turbo, DPF, EGR & Combustion Chamber – 325ml
Free Shipping
Why We Love It
  • Boosts Engine Performance significantly.
  • Promotes Better Fuel Economy.
  • Minimizes Exhaust Emissions effectively.
Main Highlights
  • ✅ TRIPLE ACTION CLEANING POWER – BEFORE, DURING AND AFTER COMBUSTION: The advanced formulation of this diesel cleaner ensures a comprehensive three-phase cleaning process that begins before combustion, continues during combustion, and persists after the combustion cycle. This multi-level cleaning approach targets and eliminates carbon deposits, unburnt fuel residues, and accumulated soot within the system, which typically hinder engine efficiency and longevity. By working at every stage of the combustion process, this product offers superior internal cleansing that goes beyond traditional single-phase treatments.
  • ✅ FULL SYSTEM COVERAGE – CLEANS THE ENTIRE FUEL AND EXHAUST SYSTEM: This total action diesel cleaner delivers deep cleaning across the entire fuel and exhaust system, including crucial and sensitive areas that are often neglected. Its powerful formula is designed to effectively clean fuel injectors, intake valves, the diesel particulate filter (DPF), exhaust gas recirculation (EGR) valves, the turbocharger, and the combustion chamber. By targeting all these critical components, the product helps maintain smoother fuel flow, optimal air intake, and efficient exhaust gas processing.
  • ✅ 6-COMPONENT PROTECTION – PRESERVES ENGINE LONGEVITY: The formulation is engineered to provide protection for six vital components within diesel engines: the injectors, valves, DPF, EGR system, turbocharger, and combustion chamber. This protective capability not only cleans but also shields these components from further deposit build-up and corrosion. Continuous use helps prevent degradation of engine performance, reduces the likelihood of costly repairs, and contributes to extending the engine’s operational lifespan.
  • ✅ REDUCES EXHAUST EMISSIONS – HELPS MEET ENVIRONMENTAL STANDARDS: Through its targeted cleaning action, this diesel cleaner significantly reduces harmful exhaust emissions, including particulate matter, nitrogen oxides, and unburned hydrocarbons. By restoring optimal combustion efficiency and ensuring clean injectors and emission control devices, the cleaner helps vehicles meet stringent emission regulations and environmental standards. This function is particularly valuable for high-mileage diesel engines and fleet vehicles that operate under demanding conditions.
  • ✅ IMPROVES FUEL ECONOMY – RESTORES POWER AND REDUCES CONSUMPTION: By removing harmful deposits and improving the performance of key components, this product contributes to a noticeable improvement in fuel economy. Clean injectors and combustion chambers allow for more efficient fuel burning, reducing overall diesel consumption. Restored turbocharger and EGR valve functions further enhance airflow and engine breathing, leading to smoother acceleration and better throttle response. These enhancements help maximise the energy derived from each litre of diesel, making it an excellent solution for those seeking to maintain peak fuel efficiency and minimise operational costs over the long term.
9.4
Superb
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7
9.2
Superb
Fastcar 2 x Redex Diesel System Cleaner (500ml For The Price Of 250ml)
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)
9.2
Superb
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8
9.0
Superb
Save 7%
Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | DPF Cleaner Diesel and Petrol | Flush and clean Engine, Injector and EGR valve
DIPETANE
Dipetane 1L Fuel Additive | Improve Fuel Economy | Reduce Emmisions | DPF Cleaner Diesel and Petrol | Flush and clean Engine, Injector and EGR valve
7% OffFree 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.
  • ✅ [ REDUCE EMISSIONS] Increases the air/fuel mixing rate, creates cleaner combustion, resulting in a substantial reduction in harmful emissions by up to 25%, positively contributing to the environment with less greenhouse gases entering the atmosphere and helping you pass your MOT.
9.0
Superb
Save 7%
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9
9.0
Superb
Liqui Moly 5156 Pro-Line Diesel System Cleaner 500ml
Liqui Moly
Liqui Moly 5156 Pro-Line Diesel System Cleaner 500ml
Why We Love It
  • Reduces pollutant emissions efficiently.
  • Suitable for all diesels.
  • Enhances fuel system maintenance.
Main Highlights
  • Reduces the pollutant emissions, optimizing smoke opacity before the emissions test. Successfully tested in international testbench investigations.
  • Suitable for all diesel engine vehicles including those with Common Rail and pumped-jet injection systems.
  • Add to the tank during each inspection and after carrying out repairs on the fuel system. To eliminate problems, we recommend mixing diesel system cleaner with fuel during refueling over a period of approximately 2,000 km.
9.0
Superb
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10
8.9
Excellent
Forte Lubricants Car Diesel Fuel System Specialist Injector Cleaner - 400ml
VWPEYY
Forte Lubricants Car Diesel Fuel System Specialist Injector Cleaner - 400ml
Free Shipping
Why We Love It
  • Enhances car performance significantly.
  • Prolongs engine life.
  • Promises efficient fuel consumption.
Main Highlights
  • Forte Lubricants Car Diesel Fuel System Specialist Injector Cleaner 400ml
  • Brand : Forte
  • Product type: AUTO ACCESSORY
  • 400ML
  • FORTE LUBRICANTS CAR DIESEL FUEL SYSTEM SPECIALIST INJECTOR CLEANER FUEL ADDITIVE 400ML 400
8.9
Excellent
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