Best Liqui Moly Engine Oil Additives of 2025

Joseph Prokop Avatar
Joseph Prokop
Last Updated: 11 Feb 2025

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Engine Oil Additives by Liqui Moly are a range of high-quality products designed to enhance the performance and longevity of your vehicle's engine. These additives are formulated to improve the lubrication and protection of your engine's components, reduce friction and wear, and stabilise the oil under extreme conditions. Liqui Moly's engine oil additives are suitable for use in a wide range of vehicles, from cars and motorcycles to trucks and buses. With their advanced technology and superior quality, Liqui Moly's engine oil additives are a reliable choice for anyone looking to maximise the performance and efficiency of their vehicle's engine.

At a Glance: Our Top Picks

LIQUI MOLY Pro-Line Engine Flush 500 ml Cover #TOP 1
LIQUI MOLY Pro-Line Engine Flush 500 ml
ftb score rating icon 9.9
LIQUI MOLY Cera Tec 3721 Engine Additive Cover #TOP 2
LIQUI MOLY Cera Tec 3721 Engine Additive
ftb score rating icon 9.8
Liqui Moly 2770 Engine Oil Additive Cover #TOP 3
Liqui Moly 2770 Engine Oil Additive
ftb score rating icon 9.6

Top 10 Liqui Moly Engine Oil Additives

LIQUI MOLY Pro-Line Engine Flush 500 ml

2427
500 ml
500 ml (Pack of 1)
LIQUI MOLY Pro-Line Engine Flush 500 ml Cover
LIQUI MOLY Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2427

The LIQUI MOLY Engine Flush is designed to thoroughly clean your engine from the inside. It effectively cleans and flushes out the oil systems of both petrol and diesel engines, ensuring optimal performance. One 500 ml can is sufficient for engines with up to 5 litres of oil, making it an efficient choice. By removing deposits from lubrication holes and oil screens, you can reduce engine noise and oil consumption, leading to a smoother and more economical driving experience.

What We Like
Effective engine cleaning
Reduces oil consumption
Improves engine performance
Suitable for petrol and diesel

LIQUI MOLY Cera Tec 3721 Engine Additive

03721
Orange
300 ml (Pack of 1)
LIQUI MOLY Cera Tec 3721 Engine Additive Cover
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 is a high-tech engine additive that enhances performance from the very first use. By using advanced ceramic compounds, it ensures smoother engine operation, which can lead to a longer lifespan for your engine. You will also benefit from lower fuel consumption and reduced emissions thanks to its ability to diminish friction. Adding it during oil changes is simple; just shake the 300 ml bottle and mix it with up to 5 litres of engine oil for lasting benefits of up to 50,000 km.

What We Like
Smoother engine performance
Lower fuel consumption
Easy to add
Long-lasting effects
Reduces friction and wear
#TOP 3

Liqui Moly 2770 Engine Oil Additive

8367
Liqui Moly 2770 Engine Oil Additive Cover
Liqui Moly 2770 - Engine Oil Additive

The Liqui Moly Hydraulic Tappet Additive is designed to enhance your engine's performance. It effectively prevents hydro tappet noise, ensuring a quieter and more comfortable ride. By cleaning lubrication holes and ducts in the oil circuit, this additive secures optimal performance of the hydro tappets. It's suitable for all petrol and diesel engines and can be mixed with any commercially available motor oils, offering great convenience. Just one 300 ml can is enough for engines with up to 6 litres of motor oil.

What We Like
Reduces hydro tappet noise
Compatible with all motor oils
Easy to add at any time
Enhances engine reliability
#TOP 4

LIQUI MOLY Motor Oil Saver Additive 300 ml

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

The LIQUI MOLY Oil Saver is a highly effective additive designed to regenerate rubber and plastic engine seals, helping to eliminate oil stains under your vehicle. By counteracting oil dilution, it aids in reducing engine noise and oil consumption, which can enhance the performance of your engine. Compatible with all petrol and diesel engines, this product is easy to use; simply add it to your motor oil at any time and let your engine warm up. Enjoy a smoother driving experience with this convenient solution.

What We Like
Reduces engine noise
Prevents oil stains
Compatible with all motors
Easy to use
Improves engine performance
#TOP 5

LIQUI MOLY MoS2 Engine Oil Additive 125 ml

1800
125 ml
LIQUI MOLY MoS2 Engine Oil Additive 125 ml Cover
LIQUI MOLY Oil Additive | 125 ml | Oil additive | SKU: 1800

The LIQUI MOLY Oil Additive is designed to enhance your engine's performance by creating a robust lubricant film on metal surfaces. This low-viscosity formula significantly reduces friction, ensuring that your engine operates more smoothly. It is suitable for use in various engines, including gasoline and diesel, and can be mixed with all commercially available motor oils. You can conveniently add it to your motor oil at any time, with a recommended dosage of 5% for standard engines and 2% for motorcycles with wet clutches.

What We Like
Reduces engine friction
Compatible with all motor oils
Easy to add at any time
Enhances engine smoothness
#TOP 6

LIQUI MOLY Diesel Particulate Filter Protector 250 ml

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

The LIQUI MOLY Filter Protector is a highly effective diesel additive designed to reduce particulate build-up in your diesel particle filter. By using this product, you can extend the service life of your filter, especially if your vehicle is often used for short trips or city driving. It is easy to use, as you simply add it to your fuel every 2,000 km. Additionally, it helps ensure optimum combustion of the fuel, reducing soot formation and lowering harmful emissions.

What We Like
Reduces particulate build-up
Extends filter service life
Easy to apply
Improves fuel combustion
Lowers emissions
#TOP 7

LIQUI MOLY Power Steering Oil Leak Stop 35 ml

1099
clear
35 ml
LIQUI MOLY Power Steering Oil Leak Stop 35 ml Cover
LIQUI MOLY Power Steering Oil Leak Stop | 35 ml | Oil additive | SKU: 1099

LIQUI MOLY Oil Leak Stop is a powerful additive designed to tackle power steering oil leaks effectively. With a model number of 1099, this product comes in a compact package measuring 3.2cm in length, 5.6cm in width, and 15.2cm in height, making it easy to store and handle. It is specifically formulated to seal leaks in your power steering system, which helps maintain optimal performance and extends the lifespan of your vehicle's components. By using this additive, you can save on costly repairs and ensure a smoother driving experience.

What We Like
Effective leak sealing
Compact and convenient packaging
Improves vehicle performance
Extends component lifespan
#TOP 8

LIQUI MOLY Pro-Line Oil Loss Stop Additive

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

LIQUI MOLY Oil Loss Stop is suitable for all petrol and diesel engines, including those with a diesel particulate filter. You can mix it with any commercial engine oil, making it a versatile choice for your vehicle. This additive helps regenerate rubber and plastic seals in your engine, effectively reducing oil consumption through piston rings and valve guides. After just 600 to 800 kilometres, you will notice a significant sealing action that enhances your engine's performance.

What We Like
Reduces oil consumption
Regenerates engine seals
Compatible with all engine oils
Easy to use
Works for petrol and diesel engines
#TOP 9

LIQUI MOLY Gear-Oil Additive for Gearbox

1040
20 g
LIQUI MOLY Gear-Oil Additive for Gearbox Cover
LIQUI MOLY Gear-Oil Additive | 20 g | Oil additive | SKU: 1040

The LIQUI MOLY Gear-Oil Additive is designed to enhance the performance of your vehicle's gearbox, driveshaft, and differentials, especially in high-temperature conditions. It contains a concentrated MoS2 additive that forms a durable lubrication film, preventing wear and reducing friction. This means you will experience less rubbing and smoother shifting, which leads to a more enjoyable driving experience. Additionally, it helps to lower temperature peaks, ensuring your transmission runs cooler and quieter, ultimately improving overall performance.

What We Like
Reduces wear and friction
Improves gear shifting
Enhances performance
Quieter operation
Suitable for high thermal loads
#TOP 10

LIQUI MOLY V-Belt Spray for Maintenance

4085
clear
400 ml (Pack of 1)
LIQUI MOLY V-Belt Spray for Maintenance Cover
LIQUI MOLY V-Belt Spray | 400 ml | Service spray | SKU: 4085

The LIQUI MOLY V-Belt Spray is designed to eliminate slipping and squeaking from V-belts, ensuring a smoother operation for your machinery. By making the belts supple, it not only enhances their performance but also extends their service life, saving you time and money on replacements. This spray protects belts and discs from wear, which means you can rely on your equipment for longer periods without issues. Additionally, it increases the traction effectiveness, leading to improved functionality and efficiency in your operations.

What We Like
Eliminates slipping and squeaking
Extends service life of belts
Protects against wear
Increases traction effectiveness
Buying Guide Image
Editor's Notes

During our Liqui Moly engine oil additive research, we found 73 Liqui Moly engine oil additive products and shortlisted 10 quality products. We collected and analyzed 216,489 customer reviews through our big data system to write the Liqui Moly engine oil additives list. We found that most customers choose Liqui Moly engine oil additives with an average price of £13.71.

The Liqui Moly engine oil additives are available for purchase. The top 10 picks range in price from a low of £5.00 to a high of £25.00, find the one that fits your budget.

Written by
Joseph Prokop Avatar

Joseph is a seasoned writer who's also passionate about automotive. His passion for automotive care and maintenance fuels his drive for more knowledge in the field. He currently resides in Middlesbrough, where he finds time to write informative contents on automotive. His automotive related articles are quite popular in journals around the world. Joseph continues to use his wealth of experience in the industry to create helpful guides on automotive.