We use cookies to enhance the security, performance, functionality and for analytical and promotional activities. We use cookies to personalize ads for you. By continuing to browse this site you're agreeing to our Privacy PolicyWe use cookies to enhance your experience and personalize ads. By using the site, you agree to that. Privacy Policy

10 bestOil Additivesof May 2025

112M consumers helped this year.

11% off

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 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

9.8

Buy it on Amazon

2

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

9.6

Buy it on Amazon

43% off

3

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

Liqui Moly

9.4

Buy it on Amazon

10% off

4

STP Engine Stop Leak for Petrol & Diesel Engines 300 ml, Improved Concentrated Formula, Conditions your Engine and Prevents Minor Oil Leaks, Mechanical Car Cleaning Products, Made in the UK

STP Engine Stop Leak for Petrol & Diesel Engines 300 ml, Improved Concentrated Formula, Conditions your Engine and Prevents Minor Oil Leaks, Mechanical Car Cleaning Products, Made in the UK

STP Engine Stop Leak for Petrol & Diesel Engines 300 ml, Improved Concentrated Formula, Conditions your Engine and Prevents Minor Oil Leaks, Mechanical Car Cleaning Products, Made in the UK

STP

9.2

Buy it on Amazon

5

STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml

STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml

STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml

STP

8.9

Buy it on Amazon

OtherRelated productsUp to 21% off

Wynn's Super Charge Oil Treatment - Enhances Viscosity - Restores Compression & Pressure - Reduces Oil Consumption & Smoke Emissions - Prevents Metal Contact & Engine Wear - 425ml

Wynn's Super Charge Oil Treatment - Enhances Viscosity - Restores Compression & Pressure - Reduces Oil Consumption & Smoke Emissions - Prevents Metal Contact & Engine Wear - 425ml

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591

REDEX Petrol Fuel System Cleaner 4 x 500ML

REDEX Petrol Fuel System Cleaner 4 x 500ML

WYNNS Formula Gold Engine Oil Treatment Increase Compression And Reduces Wear Petrol & Diesel

WYNNS Formula Gold Engine Oil Treatment Increase Compression And Reduces Wear Petrol & Diesel

15% off

6

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

8.7

Buy it on Amazon

15% off

7

Wynn's Engine Oil Stop Leak - Prevents & Stops Oil Leaks - Restores Elasticity of Seals & O-Rings - Lubricates & Protects Engine Seals - Safe for All Engine Oils - 325ml

Wynn's Engine Oil Stop Leak - Prevents & Stops Oil Leaks - Restores Elasticity of Seals & O-Rings - Lubricates & Protects Engine Seals - Safe for All Engine Oils - 325ml

Wynn's Engine Oil Stop Leak - Prevents & Stops Oil Leaks - Restores Elasticity of Seals & O-Rings - Lubricates & Protects Engine Seals - Safe for All Engine Oils - 325ml

Wynn's

8.4

Buy it on Amazon

15% off

8

Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml

Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml

Lucas Oil 10001 Heavy Duty Oil Stabiliser, 946 ml

Lucas Oil

8.2

Buy it on Amazon

15% off

9

Wynn's Engine Oil Flush Cleans Inside Engine & Removes Harmful Deposits 425ml

Wynn's Engine Oil Flush Cleans Inside Engine & Removes Harmful Deposits 425ml

Wynn's Engine Oil Flush Cleans Inside Engine & Removes Harmful Deposits 425ml

WYNNS

7.9

Buy it on Amazon

10

Liqui Moly 2770 - Engine Oil Additive

Liqui Moly 2770 - Engine Oil Additive

Liqui Moly 2770 - Engine Oil Additive

Liqui Moly

7.6

Buy it on Amazon

Related Reviews You Might Like

Diesel Oil Additives

Diesel Oil Additives

Engine Oil Additives

Engine Oil Additives

Fuel Additives

Fuel Additives