Rennlist

Coolant in reserve tank going below minimum with light on dash.

Add to repair workspace

New repair projectOpen repair workspace

Original source

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHCoolant in reserve tank going below minimum with light on dash.

Leading reported evidence

Use remaining antifreeze

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
I refilled it and used the remaining antifreeze.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Frequently discussed work

Check oil dipstick

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 did check oil dipstick.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Read full discussion summary

Leading evidence: 'Use remaining antifreeze' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check oil dipstick' (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 · 8 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Check oil dipstick

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 · Original poster
I did check oil dipstick.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Clean floor/ground

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
Get it up to temp then bring it home and park on a clean floor/ground.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Fill tool is not uncommon

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
The system uses about 5 gal so a gal short on a refill without a vacuum fill tool is not uncommon.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Use about 5 gal so a gal short

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
The system uses about 5 gal so a gal short on a refill without a vacuum fill tool is not uncommon.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Frequently discussed actions (5)

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

Check oil dipstick

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 did check oil dipstick.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Clean floor/ground

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
Get it up to temp then bring it home and park on a clean floor/ground.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Fill tool is not uncommon

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
The system uses about 5 gal so a gal short on a refill without a vacuum fill tool is not uncommon.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Use about 5 gal so a gal short

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
The system uses about 5 gal so a gal short on a refill without a vacuum fill tool is not uncommon.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

Use remaining antifreeze

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
I refilled it and used the remaining antifreeze.
Original post Read captured discussion
Coolant in reserve tank going below minimum with light on dash.

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.

8 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: 20261027T011819Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Purchased a 911 C4 that had a new motor installed (2004 in a 2003 body) would the mechanics put new hoses to coolant systems or use what was in place? Getting a light on dash that coolant is low and reservoir was below minimum. I filled it up and drove for 1/2 hour. Engine does not overheat, no white smoke, oil is good color/viscosity. Reservoir tank was back below min when I stopped driving after 30 mins. any ideas what is going on?

POST 2Original post

It could just be air in the system. That would be the best scenario. Fill it to max again and drive it with the bail up for awhile. Hopefully that's all it is.

POST 3 / ORIGINAL POSTEROriginal post

When I filled it at first it took 1/2 gallon of antifreeze. I refilled it and used the remaining antifreeze. It now has 1 gallon that I added. Would air pocket create that much of a lack of coolant? Lastly, I will take it out for a spin.

POST 4Original post

Quotes source post: 18253375

Coolant capacity is 5 to 6 gallons. It's possible, but if it is just air in the system then whoever filled it last did an abominable job.

POST 5Original post

Yes. The system uses about 5 gal so a gal short on a refill without a vacuum fill tool is not uncommon. Also pull the dip stick jic and make sure its not milky.

POST 6 / ORIGINAL POSTEROriginal post

I did check oil dipstick. Oil is not milky. Also no white smoke from tailpipe which would indicate coolant in head gasket. I�ll run it around to see if it is just burping. Engine was replaced March of 2021, I would think of any biting would occur it would have happened by now. Previous owner drove 5k miles since new engine installed.

POST 7Original post

The other possibility is a cracked coolant tank. When they start to fail they only leak under pressure so u may not see a leak. They also leak onto the exhaust and it steams off. Many threads on this.

POST 8Original post

There are also lots of hoses/places to leak coolant. Get it up to temp then bring it home and park on a clean floor/ground. If it�s a leak, it�ll rear it�s ugly little head�

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