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996 Oil and coolant loss. - Page 1 - 911/Carrera GT - PistonHeads UK

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1 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

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YOUR RESEARCH996 Oil and coolant loss. - Page 1 - 911/Carrera GT - PistonHeads UK

Leading reported evidence

Check i've done

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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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
Also, had to top up coolant (1 litre), but that's the first check I've done.
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996 Oil and coolant loss. - Page 1 - 911/Carrera GT - PistonHeads UK

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Leading evidence: 'Check i've done' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check i've done' (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.

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

Frequently discussed actions (1)

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

Check i've done

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
Also, had to top up coolant (1 litre), but that's the first check I've done.
Original post Read captured discussion
996 Oil and coolant loss. - Page 1 - 911/Carrera GT - PistonHeads UK

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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.

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

PistonHeads: 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: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'll be brief. Bought a 1999 c4 109k with engine rebuild (top and bottom), done within the last 5k miles. 3 cylinders were re-lined together with the usual bearings throughout etc. Driven for approx 2k without any issues. Last few hundred miles the oil consumption has gone from nothing to approx 1.25 litres over the last 300miles. Also, had to top up coolant (1 litre), but that's the first check I've done. The idle is now erratic when the engine is hot and in traffic but no overheating at all. No mayo on dipstick and no oil in the coolant. There is some mayo on the oil cap and adjacent section of the filler pipe. Previous owner trying to be helpful and is a porsche enthusiast. He ( and the mechanic who rebuilt the engine) have suggested an air leak on an oil pipe somewhere causing loss of pressure and oil to by pass o rings in engine. Although coolant loss would be a separate issue. Has anyone on here had a similar problem? I would like to consider all possibilities before writing the engine off.

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