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10 bestGas Treatmentsof December 2025

112M consumers helped this year.

1

Red Line (60103-12PK) Complete SI-1 Fuel System Cleaner - Gas and Injector Additive Treatment (12 PK Case)

Red Line (60103-12PK) Complete SI-1 Fuel System Cleaner - Gas and Injector Additive Treatment (12 PK Case)

Red Line (60103-12PK) Complete SI-1 Fuel System Cleaner - Gas and Injector Additive Treatment (12 PK Case)

Red Line

9.7

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38% 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 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

9.4

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40% off

3

Redex DPF Cleaner Diesel, DPF Diesel Particulate Filter Cleaner To Clear Soot Blockages Quickly & Avoid Costly Repairs, Hassle-Free DPF Cleaner To Prevent Clogging & Reduce Emissions, 250ml

Redex DPF Cleaner Diesel, DPF Diesel Particulate Filter Cleaner To Clear Soot Blockages Quickly & Avoid Costly Repairs, Hassle-Free DPF Cleaner To Prevent Clogging & Reduce Emissions, 250ml

Redex DPF Cleaner Diesel, DPF Diesel Particulate Filter Cleaner To Clear Soot Blockages Quickly & Avoid Costly Repairs, Hassle-Free DPF Cleaner To Prevent Clogging & Reduce Emissions, 250ml

Redex

9.1

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18% off

4

Redex Petrol System Cleaner 500ml, 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 500ml, 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 500ml, Petrol Injector Cleaner To Remove Harmful Deposits, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Petrol Engines, Suitable For Hybrids

Redex

8.8

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5

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 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

8.5

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OtherRelated productsUp to 4% off

Redex Diesel Injector Cleaner Set of 4 Bottles

Redex Diesel Injector Cleaner Set of 4 Bottles

STP GST51200EN Petrol Treatment 200 ml

STP GST51200EN Petrol Treatment 200 ml

Fastcar 2 x Redex Diesel System Cleaner (500ml For The Price Of 250ml)

Fastcar 2 x Redex Diesel System Cleaner (500ml For The Price Of 250ml)

BG 44K Power Enhancer Petrol Fuel System Cleaner

BG 44K Power Enhancer Petrol Fuel System Cleaner

14% off

6

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 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 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

8.2

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7

STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml

STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml

STP GST50400EN ST50400EN Complete Petrol Fuel System Cleanner, 400 ml

STP

7.9

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8

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 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

7.6

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9

Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (2)

Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (2)

Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (2)

Sea Foam

7.4

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10

STP Petrol Injector Cleaner 200 ml, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Mechanical Car Cleaning Products, Made in the UK

STP Petrol Injector Cleaner 200 ml, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Mechanical Car Cleaning Products, Made in the UK

STP Petrol Injector Cleaner 200 ml, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Mechanical Car Cleaning Products, Made in the UK

STP

7.1

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