10 bestauto fuel additivesof May 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
9.7
2
Redex Diesel Fuel System Cleaner 500ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids
Redex
9.4
14% off
3
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
9.2
8% off
4
STP GST59200EN Diesel Injector Cleaner 200 ml,Packaging/label may vary
STP
8.9
5
Wynn's Diesel Power 7 Complete Action Fuel Additive Optimises Engine Performance 1L
Wynn's
8.7
OtherUp to 6% off
Wynn's Formula Gold High-Performance Petrol System Treatment - Enhances Engine Efficiency - Improves Acceleration & Reduces Noise - Cleans & Protects Fuel Injection System - 500ml
TECHRON PEA Concentrate Plus Petrol Fuel Injector System Cleaner - 300ml
Archoil AR6900-P Max Advanced Petrol Fuel Additive Concentrate, Treats 500L of Fuel, Petrol Injector Cleaner, GPF Turbo EGR Valve Cleaner, Super Unleaded Convertor, Octane Booster (2 x 250ml)
Redex Diesel Fuel System Cleaner, Diesel Additives To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Redex One Shot, 90ml
6
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
8.4
17% off
7
STP Diesel Treatment 200 ml, Keeps your Fuel System Clean, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK, Black/Blue
STP
8.1
8
Wynn's Extreme Diesel System Cleaner - Deep Cleaning Engine Treatment - Restores Fuel Economy & Reduces Emissions - Prevents Turbo, EGR Valve & DPF Issues - 325ml
Wynn's
7.8
5% off
9
HYDRA DPB-100 Diesel Power Blast - Diesel Fuel System Cleaner | Diesel Injector Cleaner with Diesel Fuel Additive | 1 litre treats 1,000L
HYDRA
7.6
37% off
10
Liqui Moly 1803 Injection Cleaner 300ml
Liqui Moly
7.3
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