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5 Best Fuel Systems of 2025

Last Updated - 27/06/2025

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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)

Archoil

£25.95

More Details
Main highlights
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
£25.95
2

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Redex

REDEX Petrol Fuel System Cleaner 4 x 500ML

Redex

£22.99

More Details
Main highlights
- Simply add to Fuel
- Save Fuel
- Restore performance
- Reduce Emissions
- Box of 4 Petrol Fuel System Cleaners (Each 500ml)
£22.99
3
14% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

STP
14% Off

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

£10.06

£11.83
(14% Off)

More Details
Main highlights
- What You'll Get - 400 ml Diesel Fuel System Cleaner
- Restores Power and Performance - Recovers peak engine performance by removing harmful deposits
- Reduces Diesel consumption and exhaust emissions - promotes better fuel economy
- Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion
- Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank
£10.06
£11.83 (14% Off)
4
Best Value
15% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Wynn's
15% Off

WYNNS Professional Diesel Injector Cleaner - One-Tank Solution for Optimal Fuel System Performance - Cleans & Lubricates Injectors - Improves Fuel Economy & Engine Efficiency - 500ml

Wynn's

£14.43

£16.99
(15% Off)

More Details
Main highlights
- ✅ 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.
- ✅ 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.
- ✅ 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.
- ✅ 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.
- ✅ 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.
£14.43
£16.99 (15% Off)
5
15% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

STP
15% Off

STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

STP

£10.41

£12.25
(15% Off)

More Details
Main highlights
- Restores Power and Performance - Recovers peak engine performance by removing harmful deposits
- Reduces Petrol consumption and exhaust emissions - promotes better fuel economy
- Protects Your Engine - Reduces friction and protects key engine parts from wear and corrosion
- Packaging may vary
- For capless fuel tanks, please use manufacturer supplied funnel to pour STP additive in
- Concentrated Cleaning Power - Cleans and conditions the entire fuel delivery system in one tank
£10.41
£12.25 (15% Off)

5 Best Fuel Systems of 2025

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)

REDEX Petrol Fuel System Cleaner 4 x 500ML

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

WYNNS Professional Diesel Injector Cleaner - One-Tank Solution for Optimal Fuel System Performance - Cleans & Lubricates Injectors - Improves Fuel Economy & Engine Efficiency - 500ml

STP Ultra 5 in 1 Petrol System Cleaner 400ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK

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