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toping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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YOUR RESEARCHtoping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Fill tank

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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.

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Suggestion · Original poster

i purchased a gallon of porsche coolant, paid $60 at dealer, to fill tank.

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toping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Fill tank' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill tank' (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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Use distilled water

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
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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
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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

For future ref, if all you needed was to top off, you could just use DISTILLED water.

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toping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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.

Fill tank

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 purchased a gallon of porsche coolant, paid $60 at dealer, to fill tank.

Original post Read captured discussion
toping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use distilled water

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

For future ref, if all you needed was to top off, you could just use DISTILLED water.

Original post Read captured discussion
toping off coolant - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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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.

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

  • 986Forum: 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: 20261027T003124Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

my warning light for low coolant is coming on. the coolant level is just a couple inches low in the resevoir window. i purchased a gallon of porsche coolant, paid $60 at dealer, to fill tank. the parts guy said to put in 50/50 coolant and water. do i really have to cut down the coolant. i think i will only be putting in a small amount. could i have bought a no name coolant for a lot less? thanks

POST 2Original post

The correct coolant ratio is 50/50 coolant/ DISTILLED water for maximum temperature effectiveness. For future ref, if all you needed was to top off, you could just use DISTILLED water. The cooling system holds ~ 5 gals (20 qts) so even adding a qt or two won't throw off the mix balance much. Likewise, you could just add coolant if only a quart or two is needed. Good luck

POST 3Original post

Yes, you need to cut the coolant with an equal amount of distilled water (ONLY!). You can get a gallon of distilled water at just about any supermarket for less than a buck................. And no, you should not mix Porsche coolant with any other brand, can lead to problems.........

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