11 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHLiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported or suspected cause
loss in viskosity of xw-40 oils
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
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.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary
Leading evidence: 'loss in viskosity of xw-40 oils' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'loss in viskosity of xw-40 oils' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace may help reduce or prevent bore scoring' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I did put one bottle of LiquiMoly in when I changed the oil.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace may help reduce or prevent bore scoring
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I've seen reports suggesting that adding Ceratec (or similar additives) during oil changes may help reduce or prevent bore scoring.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run driven di40
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Run Driven DI40 for the best engineered solution for M9X engines.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Run driven gp-1
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
I have a 2004 Boxster S and have 90,000 miles on her running Driven GP-1.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use oil
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
"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.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported and suspected causes (1)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
loss in viskosity of xw-40 oils
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that report identifying a cause
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Reported cause
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.
LiquiMoly Ceratec - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
11 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T105141Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
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?
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
"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.
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.
…..I urge everyone to watch the PCA Tech Tactics episode on bore scoring and the one on oil and the one on fuel additives.
Also watch Lake Speed “The Oil Geek” you tube channel.
Yes, you want Moly and ZDDP in your Porsche engine oil.
But use an oil with that formula, do NOT add in stuff to add those components to an oil that does not have them.
Run Driven DI40 for the best engineered solution for M9X engines.
Other oils that are good are Driven DT40, Driven GP-1, and the newish Penzzoil Untra Platinum.
FWIW, the 986 Boxsters do not suffer from bore scoring due to their non-forged pistons.
If you watch the PCA Tech Tactics episode, they list which engines suffer from bore scoring.
On the Caymans, it’s the “S” engines that suffer.
Just use the right oil, don’t over think it.
I have a 2004 Boxster S and have 90,000 miles on her running Driven GP-1.
Good luck.
This is a source reference. Confirm exact model applicability in the original material.
