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Planet-9

Puff of smoke when downshifting

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6 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHPuff of smoke when downshifting

Leading reported evidence

Replace oil

Performed · outcome unconfirmed

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 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

I just changed the oil to Driven Dt40 ~500 miles ago.

Original post Read captured discussion
Puff of smoke when downshifting
Frequently discussed work

Clean car i noticed grey specs

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
1
Discussions
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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

Last time my CS went in for service, they overfilled it, cleaning car I noticed grey specs on my exhaust tips, they looked like ash and when touched would "crumble," took it to my indie, he said if oil is overfilled, oil will get trough.

Original post Read captured discussion
Puff of smoke when downshifting
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Leading evidence: 'Replace oil' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Clean car i noticed grey specs' (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 · 6 captured posts examined · 1 partial discussions

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Clean car i noticed grey specs

Suggestion or failed attempt

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 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

Last time my CS went in for service, they overfilled it, cleaning car I noticed grey specs on my exhaust tips, they looked like ash and when touched would "crumble," took it to my indie, he said if oil is overfilled, oil will get trough.

Original post Read captured discussion
Puff of smoke when downshifting
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.

Clean car i noticed grey specs

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

Last time my CS went in for service, they overfilled it, cleaning car I noticed grey specs on my exhaust tips, they looked like ash and when touched would "crumble," took it to my indie, he said if oil is overfilled, oil will get trough.

Original post Read captured discussion
Puff of smoke when downshifting

Replace oil

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

I just changed the oil to Driven Dt40 ~500 miles ago.

Original post Read captured discussion
Puff of smoke when downshifting
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.

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

  • Planet-9: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

1 acknowledgements have no verified action link; they do not establish a repair result.

Outcome without a verified action link

He drew out excess oil, everything got back to normal.

Original post Read captured discussion

No unique explicit quoted action; no causal link assigned

Generation: 20261026T205155Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hello, yesterday I was doing some canyon runs with my friend behind me on ca-89 and he said on some of my downshifts a puff of gray/blue smoke would come out of the exhaust. He said it only happened 3-4 times total. The trip was about 50mi. I checked the oil and it was 1 bar below the max so some oil was burnt. I just changed the oil to Driven Dt40 ~500 miles ago. My previous oil looked good, blackstone only said the iron was a little high. Could this be a VOS problem? I already changed to the Motorsport separator 2 months back so I doubt the diaphragm is already shot. No smoke on startup. I also might boroscope the engine to be safe. Could this be a lot of fumes generated by hard driving and it slipped past the VOS? Cylinder scoring? Any other suggestions?

POST 3Original post

My guess is that under G forces you can get some oil past the AOS/VOS. The Motorsports version that you have should really keep it to a minimum. I would just keep an eye on the oil level. If you stop losing oil, I would not worry about it for now.

POST 4Original post

Ok I'm gonna keep an eye on the oil level and see, it just seems peculiar that this could happen even though ive been at the track with the Motorsport aos and had no problems.

POST 5Original post

I thought that too but since the smoke was bluish/grayish instead of black, it made me count out running rich at high altitude

POST 6Original post

Last time my CS went in for service, they overfilled it, cleaning car I noticed grey specs on my exhaust tips, they looked like ash and when touched would "crumble," took it to my indie, he said if oil is overfilled, oil will get trough. Some of the effect of that oil burning in system is ash. He drew out excess oil, everything got back to normal.

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