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10 bestEngine Treatmentsof January 2026

112M consumers helped this year.

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 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

9.9

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7% 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 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

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25% off

3

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 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

9.7

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5% off

4

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 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

9.5

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5

LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427
LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427

Liqui Moly

9.2

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BG 44k PLATINUM New

BG 44k PLATINUM New

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WOL Diesel Additive Injector Cleaner Liqui Moly Diesel Engine Purge 500ml - Fuel System Cleaner – DPF Diesel Cleaner 1811 – Smooth Engine Running (2 UNIT)

WOL Diesel Additive Injector Cleaner Liqui Moly Diesel Engine Purge 500ml - Fuel System Cleaner – DPF Diesel Cleaner 1811 – Smooth Engine Running (2 UNIT)

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Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids

Redex Petrol System Cleaner 250ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids

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Wynn's 31964 Diesel Pre-Emission MOT Test Treatment Reduces CO Emissions & Exhaust Smoke

Wynn's 31964 Diesel Pre-Emission MOT Test Treatment Reduces CO Emissions & Exhaust Smoke

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6

STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml
STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml

STP

8.9

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7

BG 245 Premium Diesel Fuel System Cleaner - 1 x 325ml
BG 245 Premium Diesel Fuel System Cleaner - 1 x 325ml

Vstarner

8.7

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8

Liqui Moly 1803 Injection Cleaner 300ml
Liqui Moly 1803 Injection Cleaner 300ml

Liqui Moly

8.4

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9

Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids
Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids

Redex

8.1

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10

REDEX Petrol Fuel System Cleaner 4 x 500ML
REDEX Petrol Fuel System Cleaner 4 x 500ML

Redex

7.8

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