10 bestOil Additivesof April 2025
112M consumers helped this year.
41% off
1

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
10% off
2

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

9.6
3

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

9.4
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

9.1
5% off
5

STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml
STP

8.9
OtherUp to 38% off
5% off
6

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

8.6
10% off
7

Wynn's Engine Oil Stop Leak Sealer Treatment Additive For All Engine Types 325ml
Wynn's

8.3
20% off
8

Liqui Moly 2770 - Engine Oil Additive
Liqui Moly

8.1
5% off
9

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

7.8
10

Wynn's Super Charge Oil Treatment Compression Restoring Additive For Petrol & Diesel Engines 425ml
Wynn's

7.5

Best Reviews Guide Newsletter
Get exclusive articles, recommendations, shopping tips, and sales alerts
Sign up for our newsletter to receive weekly recommendations about seasonal and trendy products
Thank you for subscribing!
By submitting your email address you agree to our Terms and Conditions and Privacy Policy