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Yellow creamy gunk in oil filler tube

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14 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHYellow creamy gunk in oil filler tube

Reported or suspected cause

head gasket

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

The problem is the head gasket.

Yellow creamy gunk in oil filler tube
Frequently discussed work

Check their oil

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 · Original poster

I read a reader response in GT magazine for Porsches that stated that they had discovered some yellow creamy "gunk" in their oil filler tube on their 996, when checking their oil after 8,000.

Yellow creamy gunk in oil filler tube
Read full discussion summary

Leading evidence: 'head gasket' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'head gasket' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Check their oil' (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 · 14 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Clean filler and never came back

Performed · outcome unconfirmed

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 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

Had it when purchased as CPO, cleaned the filler and never came back.

Yellow creamy gunk in oil filler tube

Replace head gasket

Performed · outcome unconfirmed

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 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

I replaced the head gasket and that was it.

Yellow creamy gunk in oil filler tube

Check their oil

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 · Original poster

I read a reader response in GT magazine for Porsches that stated that they had discovered some yellow creamy "gunk" in their oil filler tube on their 996, when checking their oil after 8,000.

Yellow creamy gunk in oil filler tube

Replace not a disturbing amount

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

I cleaned out the gunk yesterday during an oil change - not a disturbing amount.

Yellow creamy gunk in oil filler tube
Frequently discussed actions (6)

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

Check their oil

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 · Original poster

I read a reader response in GT magazine for Porsches that stated that they had discovered some yellow creamy "gunk" in their oil filler tube on their 996, when checking their oil after 8,000.

Yellow creamy gunk in oil filler tube

Clean filler and never came back

No successful repair reported for this finding.

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

Had it when purchased as CPO, cleaned the filler and never came back.

Yellow creamy gunk in oil filler tube

Replace head gasket

No successful repair reported for this finding.

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

I replaced the head gasket and that was it.

Yellow creamy gunk in oil filler tube

Replace not a disturbing amount

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

I cleaned out the gunk yesterday during an oil change - not a disturbing amount.

Yellow creamy gunk in oil filler tube

Run today, disappeared entirely

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 · Original poster

I drove to Hersey, PA for the swap meet and back today, about 190 miles total at speeds up to 120 at times on open road with no one around and mostly at 80-90 for the trip......the gunk appeared in the colder weather more readily and with the longer run today, disappeared entirely, so the tips on the board may be right......I will call dealer Monday and see what they say......lots of info......thx again...........

Yellow creamy gunk in oil filler tube

Test remove the crap

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

To test, remove the crap with a rag and see if it comes back after properly driving the car until fully warmed up from now on.

Yellow creamy gunk in oil filler tube
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.

head gasket

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

The problem is the head gasket.

Yellow creamy gunk in oil filler tube
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.

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

  • Rennlist: 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: 20261026T212127Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I read a reader response in GT magazine for Porsches that stated that they had discovered some yellow creamy "gunk" in their oil filler tube on their 996, when checking their oil after 8,000. The magazine editors replied that the car may be headed for problems with the head gasket, as this indicated that the head gasket was "unhealthy" in their words. Is this correct ? I have the same situation. Has anyone else experienced this situation ? Any information or opinion would help. I will call the dealer on Monday, but want some info from the board........thanks.....

POST 2Original post

Yes. My buddy described the same thing on his, but found it on the ground under the rear end one time when parked. Anyone, Anyone??

POST 3Original post

Yes, I had that on my Alfa. The problem is the head gasket. Water passages and oil passages are next to each other and the only thng preventing the two to mix is the gasket. When they start to go, they allow water to mix with the oil due to seepage thru the gasket. Since oil and water doesn't really mix, it emulsifies into that creamy stuff. Another indication is that you will see is some milky white substance that looks like vaseline inside your water reservoir and cap. I replaced the head gasket and that was it. Good thing you caught it early enough.

POST 4Original post

If you do not regularly fully warm up you engine (short trips) you will often get this in the oil filler cap. It is condensation and is discolored by the oil. To test, remove the crap with a rag and see if it comes back after properly driving the car until fully warmed up from now on. If your head gasket was failing, you would also be consuming coolant and would eventually have a trail of steam behind you as you drive. Crap in the coolant tank is also normal if the coolant is old. A flush of the system will correct the problem.

POST 5Original post

If your car does not get driven often, or is used for short trips, the natural moisture accumulation in the crankcase does not get evaporated correctly, and will cause the emulsified water and oil goo you have seen. I would tend to believe that this is the is the issue rather than a defective head gasket. Just to be sure, watch your coolant, and your exhaust for white continuous smoke. If none appears, just clean out the goo, and drive your car more and for longer periods of time!

POST 6 / ORIGINAL POSTEROriginal post

Thanks to all for the information so far...the C4S 2003 has 18,500 miles and runs real strong, is a daily driver not babied, speeds in excess of 90 daily and that is driven now 60 plus miles minimum a day with 80 % highway.......I have no white smoke or coolant loss, added less than 1/2 quart O-40W Mobil One oil in 5,000 last miles........coolant temperature @ 180 slightly plus all the time, oil pressure at 4.5 - 5 at speed and 2-3 at idle. I drove to Hersey, PA for the swap meet and back today, about 190 miles total at speeds up to 120 at times on open road with no one around and mostly at 80-90 for the trip......the gunk appeared in the colder weather more readily and with the longer run today, disappeared entirely, so the tips on the board may be right......I will call dealer Monday and see what they say......lots of info......thx again...........

POST 7Original post

Don't waste your time with the dealer. They will probably tell you have an RMS issue.

POST 8Original post

I was told here several months ago it was normal. I noticed it back then but never again. At that time I had about 6K miles on the car.

POST 9Original post

Drive your car longer distances to burn off the condensation don't let it sit too much and do more frequent oil changes.

POST 10Original post

i had the same problem on 997s, dealer said it was normal.

POST 11Original post

I noticed this on my car as well with when it had about 3k miles. Since then, I haven't seen it. I wouldn't worry about it. My car hasn't consumed any coolant (since I screwed the cap on correctly) or any oil to speak of. Tim

POST 12Original post

'99 C4, 51K miles. I cleaned out the gunk yesterday during an oil change - not a disturbing amount. Today I drove about 150 miles total, mostly highway driving. The white gunk is back, then again it's winter in Chicago. The coolant appears clean. If the gasket were failing wouldn't the oil be in the water due to oil pressure being greater than water pressure? Hopefully it's just paranoia.

POST 14Original post

Had it when purchased as CPO, cleaned the filler and never came back. Daily driver, 30,000 miles last year.

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