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Chasing a possible coolant leak?

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

Discussion summary

YOUR RESEARCHChasing a possible coolant leak?

Leading reported evidence

Check on the dipstick

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 · Original poster

There's no oil in my coolant, and oil appeared normal when checked on the dipstick.

Original post Read captured discussion
Chasing a possible coolant leak?
Frequently discussed work

Check coolant level was

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

The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago.

Original post Read captured discussion
Chasing a possible coolant leak?
Read full discussion summary

Leading evidence: 'Check on the dipstick' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check coolant level was' (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 · 3 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace about 2 weeks ago

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 · Original poster

AOS was preventatively replaced about 2 weeks ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Check coolant level was

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

The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Replace water pump and the expansion tank (genuine porsche part)

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

The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Test no leaks

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

Had my shop do a cold pressure test - no leaks after 3 hours.

Original post Read captured discussion
Chasing a possible coolant leak?
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 coolant level was

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

The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Check on the dipstick

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 · Original poster

There's no oil in my coolant, and oil appeared normal when checked on the dipstick.

Original post Read captured discussion
Chasing a possible coolant leak?

Replace about 2 weeks ago

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 · Original poster

AOS was preventatively replaced about 2 weeks ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Replace water pump and the expansion tank (genuine porsche part)

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

The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago.

Original post Read captured discussion
Chasing a possible coolant leak?

Test no leaks

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

Had my shop do a cold pressure test - no leaks after 3 hours.

Original post Read captured discussion
Chasing a possible coolant leak?

Test with a hairline crack in the head

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

Is it possible to have a normal pressure test with a hairline crack in the head?

Original post Read captured discussion
Chasing a possible coolant leak?
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.

3 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: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have a �99 996 tip with about 105k km on it. Recently noticed that my coolant level was quite low - no other issues with temperature, no lights on the dash. AOS was preventatively replaced about 2 weeks ago. The last time I remember checking the coolant level was after preventatively replacing the water pump and the expansion tank (genuine Porsche part), which was some 9 months/10k km ago. After a coolant flush at that time the level was sitting just above the minimum line when cold. Checked that the coolant tank cap is the updated one ending in .04. No residues around the cap. Hard to tell if there are any dry coolant leak spots on my garage floor, due to the road salt this winter also staining the garage. Had my shop do a cold pressure test - no leaks after 3 hours. Keeping my fingers crossed that maybe the car just had to be burped a bit more after recent service, but wanted to know if there�s anything else I should look for �in the worst case scenario.� Is it possible that air bubbles after AOS service would cause this much of a drop in coolant level? What would be some symptoms of a cracked head? There's no oil in my coolant, and oil appeared normal when checked on the dipstick. Nothing �milkshake� looking there. Is it possible to have a normal pressure test with a hairline crack in the head? Much thanks in advance.

POST 2Original post

You received answers on your Facebook post-I agree with all of those. Don't stress about it now, just keep an eye on it for a few weeks.

POST 3 / ORIGINAL POSTEROriginal post

Quotes source post: 19806093

Thanks - just thought I�d cross-post where I can to gather all the information I can get. Hoping for the best!

This is a source reference. Confirm exact model applicability in the original material.