Carpokes

rear main seal oil leak and tire pressures

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHrear main seal oil leak and tire pressures

Leading reported evidence

Use driven dts in my 996

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 use Driven DTS in my 996 with 125k and seldom let the revs go under 3k. This cured my slight main seal drip in a month or so.
Original post Read captured discussion
rear main seal oil leak and tire pressures
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Frequently discussed work

Use 35# front and 37# rear yielding pretty even wear

No successful repair reported for this finding.

0
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 · Original poster
Am using 35# front and 37# rear yielding pretty even wear.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Read full discussion summary

Leading evidence: 'Use driven dts in my 996' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use 35# front and 37# rear yielding pretty even wear' (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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Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Use mobil one at first

Performed · outcome unconfirmed

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 used Mobil One at first, but after I did the IMS and main seal install, main seal twice...ugh!.....I began to use Driven and never looked back.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use 35# front and 37# rear yielding pretty even wear

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
Am using 35# front and 37# rear yielding pretty even wear.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use driven and never looked back

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
I used Mobil One at first, but after I did the IMS and main seal install, main seal twice...ugh!.....I began to use Driven and never looked back.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use sealant type of oil additive

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
Has anyone ever used a sealant type of oil additive ?
Original post Read captured discussion
rear main seal oil leak and tire pressures

Frequently discussed actions (6)

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

Use 35# front and 37# rear yielding pretty even wear

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
Am using 35# front and 37# rear yielding pretty even wear.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use driven and never looked back

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
I used Mobil One at first, but after I did the IMS and main seal install, main seal twice...ugh!.....I began to use Driven and never looked back.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use driven dts in my 996

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 use Driven DTS in my 996 with 125k and seldom let the revs go under 3k. This cured my slight main seal drip in a month or so.
Original post Read captured discussion
rear main seal oil leak and tire pressures
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.

Use mobil one at first

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 used Mobil One at first, but after I did the IMS and main seal install, main seal twice...ugh!.....I began to use Driven and never looked back.
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use sealant type of oil additive

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
Has anyone ever used a sealant type of oil additive ?
Original post Read captured discussion
rear main seal oil leak and tire pressures

Use some sealing magic

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
As for using some sealing magic, it may work for old Detroit irons, but for this motor, I would avoid and bite the bullet and drop the motor.....while you are there.....budget for perhaps a clutch, main seal, and flywheel as well....
Original post Read captured discussion
rear main seal oil leak and tire pressures

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.

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

Carpokes: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.

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

Generation: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My 2002 996 Turbo {just over 50 M 6-speed} developed what appears to be a rear main seal oil leak. The coincidence is very eerie. Oil used is the Mobil 1 European blend. Anyone having had a similar experience ? Has anyone ever used a sealant type of oil additive ? Any success or failure ? Am trying to avoid the costly repair. Tire pressures. Am using 35# front and 37# rear yielding pretty even wear. Tires are Michelin sport p's.Fronts are holding 7/32" and rears are 4/32" with both after circa 10 M miles of my possession. Your input is appreciated. Bring it on.

POST 2Original post

Not a 996, but same results here. Before my rebuild, my 951 motor would not drip a single drop of 10-40 dino oil (Castrol GTX). When I tried Mobil 1, it started leaking in multiple places, including the rear main. I switched back to a 'high mile' dino oil and the leaks stopped. That said, on a 50k mile 996 Turbo motor, I don't think I'd mess with additives or the like....

POST 3Original post

Pretty sure that for an M96 engine of this year a rear main drip wouldn't be unusual. But for the turbo engine that you have I just don't know for sure. I do think that some of the additives for a rear main will work. I used it once (I think the Bars Leak brand) in an old Willys engine with some success. Follow the directions closely and don't overuse it. You want the seals "plumped up", not disintegrated. My 997 calls for 36psi front, 42psi rears. I like a higher pressure as our roads stink and I don't want a bent rim. So, at 42 front and 48 rear, I find they wear more evenly and I've not damaged them from hitting a hole.

POST 4Original post

I use Driven DTS in my 996 with 125k and seldom let the revs go under 3k. This cured my slight main seal drip in a month or so. Mobil1 seems to have a thinness issue in older vehicles.

POST 5Original post

I used Mobil One at first, but after I did the IMS and main seal install, main seal twice...ugh!.....I began to use Driven and never looked back. As for using some sealing magic, it may work for old Detroit irons, but for this motor, I would avoid and bite the bullet and drop the motor.....while you are there.....budget for perhaps a clutch, main seal, and flywheel as well.... There is nothing that can be done on the cheap to any 996 Porsche engine, but at least it doesn't have all the nanny idiocy.

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