LiquiMoly Ceratec
 

I'm looking for feedback on Liqui Moly products — specifically Ceratec. I've seen reports suggesting that adding Ceratec (or similar additives) during oil changes may help reduce or prevent bore scoring. According to Liqui Moly, usage is one full 300 ml can should be used with 3–5 liters (3.2 to 5.3 U.S. quarts) of motor oil. For our cars, that would mean using two full cans per oil change. That adds significant cost and also seems like it could alter the oil's formulation. Does that seem reasonable? Are there better alternatives?

Ceratec may give you a mild heart attack during oil changes as it may cause the oil fill to look like intermix. :o

:)

I'm thinking of starting with one bottle with an oil change. Any thoughts on that?

High-quality oils do not require any additional additives; there may even be undesirable side effects.
You might also want to take a look at this: https://www.youtube.com/watch?v=CAGT5inQScE

Word. Lake Speed knows his ****************. I don't use additives.

Seconded. If the OP feels that adding some snake oil to his crankcase makes him feel good, he should go for it.

BT Barnum was not wrong.

"Liqui-Moly Ceratec: A Notable Exception

For engines with Lokasil and Alusil bores, the use of friction modifiers like Liqui-Moly Ceratec has been shown to reduce friction and wear. When added to factory A40-approved oils, these additives enhance the oil’s ability to protect cylinder walls under extreme conditions. Swepco 502 Oil Improver is also a suitable alternative to Ceratec to boost friction modifier levels."

Thats straight from LN engineering, the guys who make countless aftermarked solutions for the m96, and see a lot of them.

https://lnengineering.blog/post/773484125146497024/preventing-bore-scoring-in-porsche-engines-the

"Those concerned about Porsche Cylinder Bore Scoring should know that using an oil with high levels of moly is important to preventing cylinder bore scoring. Porsche A40 or C40 approved oils do not have sufficient levels, which may require supplementation with a product like Liqui-moly's MoS2 or Ceratec treatments. However, if using Driven DT40 or DI40 oils in your Porsche, no additive is required as these oils already have high levels of moly friction modifiers to help prevent Porsche cylinder bore scoring."

Thats straigjt from Charles Navarro himself.

https://lnengineering.com/oil.html?limit=all&mode=list


Driven oils are not available in my country, so Ceratec is most def going in my engine on the regular.

Thanks! I did put one bottle of LiquiMoly in when I changed the oil.

Needless to say, that scoring will not be prevented by additives, its root cause is the loss in viskosity of xW-40 oils on bank 2 due to excessive heat, especially of cyl 6 due to a lack in design of cooling.
No intend to start a scoring-thread, but that is the (main) cause. Use higher weight oil instead of additives.

While this is true, that it is a contributing factor, there is a reason oils with high zddp and/or moly is recommended. Charles says planly in the quote that high moly content helps with prevention.

Avoiding 0w-40 oils (which shear out of viscosity faster) and changing to a low temp thermostat are two other things that might help. I have done both of those as well.