4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHTopping off coolant
Reported repair
Replace tank the problem was gone
Reported resolution
1
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0
Unsuccessful attempts
1
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Leading evidence: 'Replace tank the problem was gone' (1 discussions report resolution; 0 report an unsuccessful attempt). Across 1 matching discussions, the most frequently mentioned possible cause is 'gone' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace tank the problem was gone' (1 discussions). For that action, 1 discussions report a resolution and 0 report an unsuccessful attempt. The most frequently reported fix is 'Replace tank the problem was gone', supported by resolution reports in 1 discussions. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
I had the expansion tank replaced because it leaked.
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.
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Suggestion
I was hoping to just add Porsche coolant and check specific gravity.
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.
4 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: 20261027T020439Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Apologies if this has been covered, I searched but did not find info on - my coolant level is just an inch or so below the MIN line in the spare coolant tank. This level was reached after 6 months of driving 6k miles. Does a slight drop like this over 6 months represent a leak to worry about?
The manual is somewhat vague in terms of what to add to it but suggests adding a mix of Porsche approved antifreeze + water.
Would this be the right antifreeze:
http://www.thepartsbin.com/catalog/?...294965146+6052
Pentosin Coolant/Antifreeze
1999-2007 Porsche 911
1 Gallon 1 Gallon Size Container New Color Pink/Red, completely compatible with older version coolant. 12 Per Case
Has anyone topped off - is it critical to mix with water or can you add the product directly for minor topping off?
Because its inexpensive, I was also mulling getting a new cap to see if it would retain coolant level over the next 6 months more so...
Anyways, any recommended info to fill up coolant?
thanks,
John
I had the expansion tank replaced because it leaked. Some times weeks went by without any lost of fluid and then suddenly it happened again. For no obvious reason. After replacing the tank the problem was gone.
At the dealership they literally topped the tank. Completely full, up to its edges. They said the extra fluid will come out, having too much of it is not a problem. Having too little of it obviously is. The OES fluid is exactly what I use.
I was adviced that original Porsche coolant should only be used. Mix it with water 50/50. Porsche coolant was not much more expensive than autostore brands.
I was also adviced rather to add only water than raw coolant fluid.
I recently added water, when coolant light came on unexpectedly. Just ran the hose right in. Car runs fine as weather is still above freezing. I was hoping to just add Porsche coolant and check specific gravity.
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