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10 bestEngine Oil Additivesof November 2025

112M consumers helped this year.

12% 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

9.7

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52% off

2

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

Liqui Moly

9.4

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15% off

3

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

Wynn's

9.1

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4

Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv SF-16 Seafoam Liquid 16 Fl Oz
Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv SF-16 Seafoam Liquid 16 Fl Oz

Sea Foam

8.9

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24% off

5

Liqui Moly 2770 - Engine Oil Additive
Liqui Moly 2770 - Engine Oil Additive

Liqui Moly

8.6

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Lucas Oil 40001 Heavy Duty Oil Stabilizer-1L

Lucas Oil 40001 Heavy Duty Oil Stabilizer-1L

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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

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Wynn's Stop Smoke For Oil Additive For Reducing Petrol & Diesel Engine Exhaust Emissions

Wynn's Stop Smoke For Oil Additive For Reducing Petrol & Diesel Engine Exhaust Emissions

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STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml

STP GST62450EN06 Engine Flush for Petrol & Diesel Engines 450 ml

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10% off

6

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

8.3

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7

LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182
LIQUI MOLY Pro-Line Oil Loss Stop | 1 L | Oil additive | SKU: 5182

Liqui Moly

8.0

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15% off

8

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

Wynn's

7.7

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33% off

9

LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 1802
LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 1802

Liqui Moly

7.4

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22% off

10

Lucas Oil 10130 Synthetic Stabilizer-946ml
Lucas Oil 10130 Synthetic Stabilizer-946ml

Lucas Oil

7.1

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