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 December 2025

112M consumers helped this year.

9% 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

9.8

View Product
Buy it on Amazon

47% 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

9.6

View Product
Buy it on Amazon

3

Lucas Oil 10002 Heavy Duty Oil Stabilizer, 3.785 Litre, White
Lucas Oil 10002 Heavy Duty Oil Stabilizer, 3.785 Litre, White

Lucas Oil

9.4

View Product
Buy it on Amazon

4

Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (6)
Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (6)

Sea Foam

9.2

View Product
Buy it on Amazon

5

LIQUI MOLY Oil Additive | 200 ml | Oil additive | SKU: 7178
LIQUI MOLY Oil Additive | 200 ml | Oil additive | SKU: 7178

Liqui Moly

9.0

View Product
Buy it on Amazon

Related productsUp to 53% off

Wynn's Super Charge Oil Treatment Compression Restoring Additive For Petrol & Diesel Engines 425ml (Pack of 2)

Wynn's Super Charge Oil Treatment Compression Restoring Additive For Petrol & Diesel Engines 425ml (Pack of 2)

View Deal
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)

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

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

View Deal
LIQUI MOLY Diesel Particulate Filter Protector | 250 ml | Diesel additive | SKU: 7180, Gray

LIQUI MOLY Diesel Particulate Filter Protector | 250 ml | Diesel additive | SKU: 7180, Gray

View Deal

26% off

6

Redex Octane Booster, Fuel Additives For Petrol Engines, Maximise Performance & Increase Fuel Economy Petrol Additive For Cars, Boost Engine Performance & Improve Power, 250ml
Redex Octane Booster, Fuel Additives For Petrol Engines, Maximise Performance & Increase Fuel Economy Petrol Additive For Cars, Boost Engine Performance & Improve Power, 250ml

Redex

8.7

View Product
Buy it on Amazon

7

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

8.4

View Product
Buy it on Amazon

8

Lucas Oil 10279 Gallon Engine Stop Leak, 3.785 Litre
Lucas Oil 10279 Gallon Engine Stop Leak, 3.785 Litre

Lucas Oil

8.2

View Product
Buy it on Amazon

10% off

9

LIQUI MOLY Oil Additive | 125 ml | Oil additive | SKU: 1800
LIQUI MOLY Oil Additive | 125 ml | Oil additive | SKU: 1800

Liqui Moly

7.9

View Product
Buy it on Amazon

10

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

View Product
Buy it on Amazon
subscribe-icon

Best Reviews Guide Newsletter

Get exclusive articles, recommendations, shopping tips, and sales alerts

By submitting your email address you agree to our Terms and Conditions and Privacy Policy