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Best oil for manual transmission

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28 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHBest oil for manual transmission

Leading reported evidence

Replace after having swepco

Performed · outcome unconfirmed

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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
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Performed · outcome unconfirmed

I just had a trans fluid changed after having Swepco for a couple of months.

Best oil for manual transmission
Read full discussion summary

Leading evidence: 'Replace after having swepco' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace after having swepco' (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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1 matching discussions · 28 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace gear lube

Performed · outcome unconfirmed

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0
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0
Unsuccessful attempts
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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
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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.

Performed · outcome unconfirmed

Because of the above comparison chart, I went with Lubro Moly when I recently changed my gear lube.

Best oil for manual transmission

Replace last week

Performed · outcome unconfirmed

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0
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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

Got my trans oil replaced last week with OEM oil: 000-043-204-19.

Best oil for manual transmission

Replace porsche trans oil out

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
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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 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 changed the Porsche trans oil out to Mobil Delvac in early spring.

Best oil for manual transmission

Run oem stuff

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

I believe the Motul is better but for 10 years, I ran the OEM stuff that is Shell, I believe.

Best oil for manual transmission
Frequently discussed actions (10)

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

Replace after having swepco

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 had a trans fluid changed after having Swepco for a couple of months.

Best oil for manual transmission

Replace 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 just bought the Porsche trans lube to change back to.

Best oil for manual transmission

Replace gear lube

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

Because of the above comparison chart, I went with Lubro Moly when I recently changed my gear lube.

Best oil for manual transmission

Replace kk

No successful repair reported for this finding.

0
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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

Should I have said next month or perhaps next week's engine oil change, KK?

Best oil for manual transmission

Replace last week

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

Got my trans oil replaced last week with OEM oil: 000-043-204-19.

Best oil for manual transmission

Replace porsche trans oil out

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 changed the Porsche trans oil out to Mobil Delvac in early spring.

Best oil for manual transmission

Replace seems

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

This oil change seems to have appeased these synchro demons for now ...

Best oil for manual transmission

Run oem stuff

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 believe the Motul is better but for 10 years, I ran the OEM stuff that is Shell, I believe.

Best oil for manual transmission

Use either

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 wouldnt use either.

Best oil for manual transmission

Use mobil delvac or redline

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

Should I use Mobil delvac or redline?

Best oil for manual transmission
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.

28 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: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Should I use Mobil delvac or redline? 99 911 130k miles Thanks! Brian

POST 2Original post

I wouldnt use either. Read the reviews. Its going to shift better with the Porsche gear oil or Pelicans.

POST 3Original post

Get the NS version of Redline if you don't have LSD.

POST 4 / ORIGINAL POSTEROriginal post

Do you mean swepco 201 80w90?

POST 5Original post

I am thinking of trying Motul Gear 300 75w90 when I do mine, 100% synthetic, ester based. Has anybody tried it?

POST 6Original post

Quotes source post: 10485265

That's what I use.

POST 7Original post

Brian, I changed the Porsche trans oil out to Mobil Delvac in early spring. When the temp is ~40-50 deg f it is very hard to shift 1-2 and stiff into 3. Once the car warms up it is fine. I just bought the Porsche trans lube to change back to. 2003 C2 ~56k mi

POST 9Original post

I just had a trans fluid changed after having Swepco for a couple of months. I did not like swepco and changed to Mobil Delvac. The Swepco is thick as hell apparently and it caused cold start shifting into first and second. The shifting w/ Delvac was VASTLY improved. I believe the Motul is better but for 10 years, I ran the OEM stuff that is Shell, I believe.

POST 10 / ORIGINAL POSTEROriginal post

For the oem stuff I found part number 999.917.546.00. When I search on this part number I find Fuchs brand Titan sintopoid 75w90 for $15. Half the price of the oem. Does anyone know if this is the same stuff? Has anyone used it? Thanks for all your help Brian

POST 11Original post

Got my trans oil replaced last week with OEM oil: 000-043-204-19. Had to buy 5 liters of it for $210. CDN: Ouch! One of Previous Owners was a bit hasty with 2nd & 4th synchros. This oil change seems to have appeased these synchro demons for now ... but not totally. Last time replaced was 3 yrs ago with not sure what since I have owned the car for a little over a year.

POST 12Original post

Seems everyone has had issues with non OEM trans fluid. I used OEM when i changed it due to the uncertainty around who makes it for Porsche.

POST 13Original post

Quotes source post: 10485638

Why did you need to buy 5 liters? The trans only takes a bit over 2.5 Liters if memory serves.

POST 14Original post

Just order the Porsche oil and be done with it. I ordered mine from here: http://www.suncoastparts.com/product..._Code=996Trans

POST 15Original post

Quotes source post: 10485654

Minimum amount I had to buy. Oil change was done at a trusted VW dealer (OEM dealer 2.5 hrs away) and oil came from that Porsche dealer who sells it that way. I hope it keeps as I have the remainder for next time. Did engine oil change as well and no metal in filter: Happy to report (143K kms, '00 C2). Added a magnetic plug sold at Pelican for next year's check.

POST 16Original post

Soverystout: Off topic, but I meant to ask: What is 'the First State' as you proclaim as your provenance? I guess Ma or Va, but please enlighten this Canuck who should know better, having lived in NJ for 3 yrs in the early 80s. Great memory of the US camaraderie by the way!

POST 17 / ORIGINAL POSTEROriginal post

I'm just going to order oem and be done with it

POST 19Original post

Quotes source post: 10485905

WHAAAAT? Should I have said next month or perhaps next week's engine oil change, KK?

POST 20Original post

The oil is already millions of years old, I doubt one year in a car is going to make it expire.

POST 24Original post

Nothing works as well as the Porsche OEM trans oil. Not sure why but every other brand has poor shifting characteristics when cold (even in summer) compared to the OEM stuff. Once trans is warmed up the other top brands seem to be OK. Not sure if anyone knows why the Porsche stuff works so well but it does. I know Porsche does not have an oil refinery but its hard to get info about the exact process of how its refined differently for the Porsche trans. I think Shell actually refines it, correct?

POST 25Original post

Quotes source post: 10487497

This is why, the cold viscosity numbers. I am thinking of trying Motul as it is the only one that betters the Shell when cold while maintaining protection when hot. Redline and Mobil 1 are way thicker when cold.

POST 27Original post

Quotes source post: 10488245

[Image-only post; no author-written text. Original image references:] https://rennlist.com/forums/graemlins/bigok.gif

POST 28Original post

Because of the above comparison chart, I went with Lubro Moly when I recently changed my gear lube. $12.13/L is a great price@ Autohaus. Shifts excellent at all temperatures.

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