10 bestOil Additivesof July 2026
112M consumers helped this year.
1
Sea Foam Motor Tune - Up SF16 For Petrol and Diesel Engines (24)
Sea Foam
9.8
37% 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
9.6
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
9.4
4
Lucas Oil 10002 Heavy Duty Oil Stabilizer, 3.785 Litre, White
Lucas Oil
9.1
5
Red Line 80301 Limited Slip Friction Modifier - 4 Ounce (12 Pack)
Red Line
8.8
OtherUp to 40% off
LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591
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
Millers Oils VSPe Power Plus Fuel Additive & Octane Booster 500ML
STP Ceramic Oil Treatment 443ml
33% off
6
LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427
Liqui Moly
8.5
7
Lucas Oil 10279 Gallon Engine Stop Leak, 3.785 Litre
Lucas Oil
8.3
8
DERV Control - Biocide for Diesel/Gas Oil & Red Diesel (5 Litres)
Chemiphase
8.0
9
LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182
Liqui Moly
7.7
10
Millers Oils VSPe Power Plus Multi Shot, 1 Litre
Millers Oils
7.4
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