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Liqui Moly Cera Tec Ceramic Additive Review: Smoother engines and lower fuel consumption?

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
4.6
[Instant Smooth Performance]  High-tech ceramic additives reduce friction from first use, improving engine smoothness and longevity.
[Fuel Savings & Lower Emissions]  Smoother operation lowers fuel consumption and cuts pollutant emissions.
[Easy Oil-Change Application]  300 ml treats up to 5L oil; mixable with all engine and gear oils.
[Long-Lasting Protection]  Protects engines up to 50,000 km by filling surface imperfections and reducing wear.
[TÜV-Certified Ceramic Formula]  Proven by TÜV Thüringen; safe for turbos and catalytic converters.
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Automotive additive that promises reduced wear and smoother running from the very first use. Drivers who want a quieter, more economical engine will appreciate immediate gains. Does Liqui Moly Cera Tec Ceramic Additive deliver long-term protection and measurable fuel savings?

⚡ At a Glance
  • Engine Smoothness: Smoother running with reduced friction and noticeably quieter operation
  • Best for: Owners of petrol and diesel cars seeking reduced wear and improved economy
  • Not ideal for: Vehicles fitted with wet clutch systems

High-tech ceramic compounds fill surface imperfections to prevent direct metal contact. A 300 ml bottle treats up to 5 litres of oil and delivers long-lasting protection.


Smoother engine running – thanks to high-tech ceramic compounds

Ceramic particles settle into microscopic surface irregularities on metal parts, creating a smoother contact interface that lowers friction. Formulation has high thermal resilience and is compatible with manual and automatic transmissions.

Reduced internal friction leads to quieter operation and a cleaner feel on the rev range. Drivers will notice smoother idling and less mechanical noise from first use.

Lower fuel consumption – with diminished internal friction

By preventing direct metal-to-metal contact, frictional losses inside the engine fall, which reduces the effort required to turn moving parts. The additive mixes with fresh oil during an oil change for uniform distribution.

Improved mechanical efficiency can translate into better fuel economy under normal driving conditions. Regular use across oil changes helps maintain that efficiency.

Extended engine life – with surface-filling ceramic particles

Ceramic compounds act like microscopic fillers that smooth rough surfaces and reduce wear between contacting metal components. TÜV Thüringen testing supports the effectiveness of the chemical components in reducing wear.

Less wear on bearings and other friction points reduces long-term deterioration and can prolong service intervals. The treatment supports longevity, particularly in engines with heavy use.

✨ The 4 Key Reasons for Liqui Moly Cera Tec Ceramic Additive
  1. TÜV-certified formula – Provides measurable reduction in metal wear and engine friction
  2. Long-lasting protection – Delivers protection lasting up to 50,000 kilometres between treatments
  3. Simple application – Can be added easily to fresh oil during an oil change
  4. Wide compatibility – Compatible with petrol and diesel engines and most oil types
📋 Technical Details at a Glance
  • Category: Engine additive
  • Volume: 300 ml
  • Suitable for: Petrol and diesel engines
  • Compatibility: Mixable with all gear and engine oils on the market
  • Not suitable for: Wet clutch systems
❓ Frequently Asked Questions

Q: Can Cera Tec be used in both petrol and diesel engines?

A: Yes. The formulation is suitable for use in petrol and diesel engines according to the product description.

Q: How much oil does one 300 ml bottle treat?

A: A 300 ml bottle is sufficient for up to 5 litres of engine oil and should be added to fresh oil during an oil change.

Q: Is the additive safe for cars with wet clutches?

A: No. The additive is not suitable for use with wet clutches, though it is compatible with manual and automatic transmissions where wet clutches are not present.

🏆 Our Verdict

Suitable for drivers of petrol and diesel cars who want immediate reduction in engine friction and quieter running. The ceramic compounds and TÜV certification are the key selling points, with long-lasting protection claimed up to 50,000 kilometres. Although upfront cost varies, the potential for reduced wear and improved fuel economy makes it a sensible long-term value for many owners.