Liqui Moly is one of the most respected names in the automotive lubrication industry. Known for precision German engineering, the brand produces a wide range of high-quality oils and additives that enhance engine performance, reduce wear, and support long engine life. This guide explains how Liqui Moly oil additives work, their benefits, and the best Liqui Moly additives available.
Liqui Moly Engine Oil Additive
1. Liqui Moly Cera Tec (300 ml)
Key Features:
- High-tech ceramic wear protection
- Reduces friction and wear in both cold-start and high-load conditions
- Helps lower fuel consumption by improving lubrication efficiency
- Withstands extreme thermal and chemical stress
- Suitable for both gasoline and diesel engines
- One treatment provides very long-lasting protection.
2. Liqui Moly Cera Tec (Alternate LM3721 Listing)
Key Features:
- Identical Cera Tec ceramic formula in an alternate packaging
- Offers exceptional engine wear reduction
- Helps engines operate more smoothly
- Compatible with most commercially available engine oils
- Not intended for motorcycles with wet clutches
- “Made in Germany” quality control
3. Liqui Moly Pro-Line Engine Flush (500 ml)
Key Features:
- Powerful detergent formula for cleaning the internal oil system
- Removes sludge, varnish, and carbon deposits before an oil change
- Helps restore proper oil circulation
- Safe for seals and compatible with catalytic converters
- Simple to use: add before draining old oil and idle engine for a few minutes.
- Great for engines with unknown maintenance history
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4. Liqui Moly Engine Flush Plus (300 ml)
Key Features:
- A lighter, mild engine flush suitable for most vehicles
- Dissolves and suspends dirt and deposits for removal during the oil change
- Helps restore engine cleanliness without harsh chemical reactions
- Ideal for smaller engines or routine maintenance
- Improves the effectiveness of fresh oil after a flush
5. Liqui Moly Pro-Line Visco Stable (1 L)
Key Features:
- Viscosity stabilizer designed to maintain oil thickness under stress
- Helps prevent oil thinning at high temperatures
- Reduces engine wear through more consistent lubrication
- Improves oil pressure stability
- Compatible with most standard and high-performance engine oils
- Ideal for older engines or vehicles used under heavy loads
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What Makes Liqui Moly Oil Additives Unique?
Liqui Moly additives stand out due to their advanced engineering and chemical formulations. Here are the key qualities that set them apart:
1. MoS₂ (Molybdenum Disulfide) Lubrication
Liqui Moly is known for using MoS₂, a solid lubricant that forms a protective layer on metal surfaces. This drastically reduces friction and wear, helping engines run smoother and cooler.
2. Ceramic Protection Technology
Products like Cera Tec use micro-ceramic particles that create long-lasting protection against metal-to-metal contact. This offers stability even under extreme temperatures and high-load driving.
3. Broad Compatibility
Liqui Moly additives can be used with synthetic, semi-synthetic, and mineral engine oils. Most of them are safe for gasoline and diesel engines, turbocharged engines, and older vehicles.
4. Long-Term Engine Protection
Some additives offer protective effects for tens of thousands of kilometers, reducing the frequency of treatment.
5. Cleaning and Detergent Action
Engine flush products dissolve sludge, varnish, and carbon deposits, allowing for cleaner lubrication pathways and better engine performance.
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Benefits of Using Liqui Moly Engine Oil Additives
When added correctly, Liqui Moly additives provide several significant advantages:
Reduced friction and wear
The protective layers formed by MoS₂ or ceramic compounds minimize the metal-to-metal contact that leads to engine wear.
Improved fuel efficiency
Reduced friction means the engine does not have to work as hard, often improving fuel economy.
Quieter, smoother engine operation
Many drivers notice a quieter idle and better throttle response after use.
Turbocharger protection
Additives help protect the high-speed bearings in turbocharged engines, especially during high heat or low oil pressure events.
Better long-term performance
Engines treated with protective additives tend to show less wear over time, extending their lifespan.
Cleaner oil system
Flush products remove dirt and sludge, so clean oil flows more effectively.
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Best Practices for Using Liqui Moly Additives
1. Follow the Recommended Dosage
Most Liqui Moly additives require adding about 3–5% of the engine’s total oil volume. Always check the instructions on the product label.
2. Add at the Right Time
- Add engine flush products to old oil just before an oil change.
- Add protective additives such as Cera Tec or MoS₂ to fresh oil immediately after an oil change.
3. Shake Bottles Well
Additives containing solids like MoS₂ or ceramic particles should be thoroughly mixed before pouring.
4. Observe Engine Performance
Notice changes in fuel economy, engine noise, or oil consumption after adding the product to evaluate effectiveness.
5. Use Genuine Products
Counterfeit oil additives exist in the market. Always purchase from reputable sellers.
Are Liqui Moly Additives Worth It?
For many drivers, yes. Liqui Moly additives can significantly enhance engine life, improve performance, and reduce friction-related wear. They are especially beneficial for:
- High-mileage vehicles
- Turbocharged engines
- Engines with sludge buildup
- Drivers who want extra long-term protection
- Cars used under heavy-load or high-temperature conditions
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FAQs
What does Liqui Moly oil additive do?
Liqui Moly oil additives reduce friction, protect metal surfaces, and improve engine lubrication. They create a protective film, often using MoS₂ or ceramic particles, that minimizes wear, helps the engine run smoothly, improves fuel efficiency, and can reduce noise. Some additives also clean sludge and deposits inside the engine for better long-term performance.
Is LIQUI MOLY engine oil additive any good?
Yes. Liqui Moly additives are highly regarded for their quality and noticeable results. Many drivers report smoother engine operation, reduced noise, lower oil consumption, and improved performance. The brand uses advanced German-engineered formulations that provide long-lasting protection and measurable improvements, especially in high-mileage or heavily used engines.
How to use LIQUI MOLY engine oil additive?
Using Liqui Moly oil additives is simple. Shake the bottle well and pour the recommended amount directly into the engine’s oil fill port. Most protective additives should be added to fresh oil during or immediately after an oil change. For flush products, add them to the old oil before draining, idle the engine for a few minutes, then perform the oil change.
How often should I use Liqui Moly oil additive?
Most Liqui Moly protective additives, such as Cera Tec or MoS₂, only need to be used every 25,000–50,000 km or every few oil changes because their protective effect lasts a long time. Engine flush products should be used only before an oil change and not added regularly to the engine.
How long should I leave LIQUI MOLY in my oil?
Protective additives like Cera Tec and MoS₂ stay in the oil for the entire oil-change interval and continue providing benefits until the next oil change. Flush additives, however, should only be left in for about 10 minutes while idling before draining the old oil, never driven with.
