10 bestDiesel Engine Fuel Additivesof July 2026
112M consumers helped this year.
1
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
9.9
37% off
2
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
9.8
3
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
9.5
14% off
4
STP Diesel High Milage Injector Cleaner 200 ml, Cleans and Protects your Engine for 300 miles, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP
9.3
8% off
5
STP Diesel Injector Cleaner 200 ml, Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP
9.0
OtherUp to 4% off
Wynn's Extreme Diesel System Cleaner - Deep Cleaning Engine Treatment - Restores Fuel Economy & Reduces Emissions - Prevents Turbo, EGR Valve & DPF Issues - 325ml
Wynn's Diesel Power 7 Complete Action Fuel Additive Optimises Engine Performance 1L
Wynn's Diesel Injector Cleaner Engine Fuel System Additive Treatment 325ml (Pack of 2)
JLM Diesel Extreme Clean | Strong All-In-One Fuel System & Engine Cleaner, 1L (J02360)
6
Archoil AR6900-D Max Advanced Diesel Fuel Synthesis 500ml | Advanced Super Diesel Fuel Converter with Ongoing Fuel System, Fuel Injector, DPF, EGR and Turbo Cleaning (500ml)
Archoil
8.8
6% off
7
Cataclean Diesel Fuel & Exhaust Cleaner Catalytic Converter Valve & Injector Cleaner 500ml
Cataclean
8.5
8
Archoil AR6400-D MAX Pro DPF Cleaner Diesel - Diesel Injector and Particulate Filter Treatment - Fuel System Cleaner - EGR, Turbo and Emissions Additive for MOT Pass - 400ml Concentrate
Archoil
8.2
9
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 2 x 250ml Treats 500L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (2 x 250ml)
Archoil
7.9
10
Archoil AR6400-D MAX Pro Diesel Engine, Turbo, DPF Cleaner 400ml & AR6900-D 250ml
Archoil
7.7
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