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losing antifreeze

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHlosing antifreeze

Leading reported evidence

Check coolant

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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
Just to be sure, check the oil for the presence of coolant...it will appear as gooey mush on the dipstick...and check the coolant for the presence of oil.
Original post Read captured discussion
losing antifreeze

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

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1 matching discussions · 4 captured posts examined · 0 partial discussions

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Check oil

Suggestion or failed attempt

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
Just to be sure, check the oil for the presence of coolant...it will appear as gooey mush on the dipstick...and check the coolant for the presence of oil.
Original post Read captured discussion
losing antifreeze

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.

Check coolant

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
Just to be sure, check the oil for the presence of coolant...it will appear as gooey mush on the dipstick...and check the coolant for the presence of oil.
Original post Read captured discussion
losing antifreeze

Check 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
Just to be sure, check the oil for the presence of coolant...it will appear as gooey mush on the dipstick...and check the coolant for the presence of oil.
Original post Read captured discussion
losing antifreeze

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.

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: 20261026T190023Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm losing antifreeze (1999 996) and have been told that the plastic expansion tanks on the early 996 have this problem. Anyone else dealt with this issue?

POST 2Original post

its a common leak but you need to look and see where its lekaing from

POST 3Original post

Take a flashlight and look at the area under and around your coolant tank on the left side of the engine compartment. See if you can see white crusty residue on any of the cross members under or around the tank. also look at the cap and see if there's any crusty residue in the moat around the cap. Your cap should end in the numbers 01....if it ends in 00, then you have to old one and they fail regularly. Most likely you'll need to change out the coolant tank or the cap. There's a great DIY with pictures and text on How-To on RennTech. Just to be sure, check the oil for the presence of coolant...it will appear as gooey mush on the dipstick...and check the coolant for the presence of oil. Hopefully, there wont be any intermix. If there is, do a search on the subect of intermix.

POST 4 / ORIGINAL POSTEROriginal post

Thanks, no mixture with oil fortunately. The antifreeze simply come out of the expansion tank. I'll try a new cap and the DIY if necessary.

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