10 bestEngine Oil Additivesof June 2026
112M consumers helped this year.
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
9.9
2
Lucas Oil 10002 Heavy Duty Oil Stabilizer, 3.785 Litre, White
Lucas Oil
9.8
3
Slick-50 61399750 Engine Treatment 750ml (Pack of 2)
Slick 50
9.5
4
Lucas Oil 10279 Gallon Engine Stop Leak, 3.785 Litre
Lucas Oil
9.2
5
XADO 1 Stage Maximum SUV Engine Restoration Oil Treatment Cars 6-10 liter oil (Bottle, 360 ml)
XADO
9.0
Other
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
Millers Oils Diesel Power Ecomax Fuel Additive Treatment 500ml 0.5L NEW IMPROVED
Wynn's Super Charge Compression Improver - Car Oil treatment - Restores Compression & Pressure - Reduces Oil Consumption & Smoke Emissions - Prevents Metal Contact & Engine Wear - 325ml
Millers Oils VSPe Power Plus Fuel Additive & Octane Booster 500ML
6
LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182
Liqui Moly
8.7
40% off
7
LIQUI MOLY Oil Additive | 300 ml | Oil additive | SKU: 2591
Liqui Moly
8.4
8
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
8.1
9
STP Ceramic Oil Treatment 443ml
STP
7.8
10
Redex Diesel System Cleaner, 500ml, 4 Pack - By Shop 4 Less
Aammus
7.5
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