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Planet-9

Oil around the bell housing on a 2008 Cayman S

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Original source
6 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHOil around the bell housing on a 2008 Cayman S

Reported or suspected cause

rear main seal

Reported cause

No successful repair reported for this finding.

1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context

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

Mechanic said that the most likely culprit is the rear main seal.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S
Frequently discussed work

Recommend having the imsb stud rotated 180 degrees

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

While you're in there I recommend having the IMSB stud rotated 180 degrees which will present a new bearing surface for the balls to roll in.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S
Read full discussion summary

Leading evidence: 'rear main seal' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'rear main seal' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Recommend having the imsb stud rotated 180 degrees' (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.

Read captured replies

1 matching discussions · 6 captured posts examined · 1 partial discussions

Compare 2 other evidence results

Recommend having the imsb stud rotated 180 degrees

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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

While you're in there I recommend having the IMSB stud rotated 180 degrees which will present a new bearing surface for the balls to roll in.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S

Use heat

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

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

You'll have to use heat on the nut as it's loctited but the new position of the inner race will give many more miles of service.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S
Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Recommend having the imsb stud rotated 180 degrees

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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

While you're in there I recommend having the IMSB stud rotated 180 degrees which will present a new bearing surface for the balls to roll in.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S

Use heat

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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

You'll have to use heat on the nut as it's loctited but the new position of the inner race will give many more miles of service.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S
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.

rear main seal

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

Mechanic said that the most likely culprit is the rear main seal.

Original post Read captured discussion
Oil around the bell housing on a 2008 Cayman S
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.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Planet-9: 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: 20261026T220748Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I have oil around the bell housing on my 2008 Cayman S. Mechanic said that the most likely culprit is the rear main seal. Do you have any experience with oil in this same area? What was it? What did you do?

POST 2Original post

That's not uncommon and is usually the rear main seal weeping. Unless it gets too bad many people just ignore it.

POST 3Original post

Thanks. I think that I read that folks just try to hold out until they do a clutch job. The oil leak is going to bug me, but I don’t know if it’s worth almost $1,400 to mess with it.

POST 4Original post

More like $2,450, at least as of yesterday quoted by my dealer. I change the oil once a year so not worried about it or plan to do anything anytime soon.

POST 6Original post

While you're in there I recommend having the IMSB stud rotated 180 degrees which will present a new bearing surface for the balls to roll in. The pressure on the inner race of this application is all on one side and the spalling of the inner race is the first step in bearing failure. You'll have to use heat on the nut as it's loctited but the new position of the inner race will give many more miles of service. Keeping the oil level proper is of primary importance but for certain I can show you a failed IMSB and the primary wear of the races was on one side of the inner race. Probably have to loosen the chain tensioners to turn the stub, but it shouldn't affect timing of the cams as nothing is being moved except a stub shaft.

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