4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHChanging the automatic transmission fluid
Leading reported evidence
Replace every 40k
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
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
One of the Boxster owners in my group of friends drives to italy on a regular basis and now has 160,000 miles on his Boxster S tip without issues, but by having the transmission fluid changed every 40k..
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
after reading on another porsche forum about the problems somone had with their Tip box on a 996 failing, there was a suggestion that the fluid should be changed earlier than the recommended 90k (i think that was what was said)
Leading evidence: 'Replace every 40k' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Recommend 90k (i think' (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.
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
During one of my tiptroninc explosions I had the transmission rebuilt by ZF who told me that they do not know what Porsche were thinking when they specified a 90k interval, they recommend for high performance cars that its changed every 40k or 4 years!!
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
3.4 cars used the ZF transmission which uses Esso LT71141 fluid, wheras the 3.6 cars use a Mercedes transmission and Shell 3403-M115 fluid.
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 · Original poster
after reading on another porsche forum about the problems somone had with their Tip box on a 996 failing, there was a suggestion that the fluid should be changed earlier than the recommended 90k (i think that was what was said)
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.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Recommend 90k (i think
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
after reading on another porsche forum about the problems somone had with their Tip box on a 996 failing, there was a suggestion that the fluid should be changed earlier than the recommended 90k (i think that was what was said)
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
During one of my tiptroninc explosions I had the transmission rebuilt by ZF who told me that they do not know what Porsche were thinking when they specified a 90k interval, they recommend for high performance cars that its changed every 40k or 4 years!!
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
after reading on another porsche forum about the problems somone had with their Tip box on a 996 failing, there was a suggestion that the fluid should be changed earlier than the recommended 90k (i think that was what was said)
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
One of the Boxster owners in my group of friends drives to italy on a regular basis and now has 160,000 miles on his Boxster S tip without issues, but by having the transmission fluid changed every 40k..
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
During one of my tiptroninc explosions I had the transmission rebuilt by ZF who told me that they do not know what Porsche were thinking when they specified a 90k interval, they recommend for high performance cars that its changed every 40k or 4 years!!
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.
Porsche Club GB: 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: 20261027T044418Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi
after reading on another porsche forum about the problems somone had with their Tip box on a 996 failing, there was a suggestion that the fluid should be changed earlier than the recommended 90k (i think that was what was said)
Is this correct? and if so - given that mine has 60K on it now, should I be looking to change the fluid in mine (which seems fine except immediately on start up)
Can it be done without full height ramps? and does it need to be flushed at all, if so what with? what fluid does it need?
oh, and how do you drain / refill the box?
many thanks in advance, if anyone has experience of this and can help
Jon
I would suggest that 60K is the perfect time to change the ATF, not 96K as per the book.
There is a good DIY here:
http://www.renntech.org/forums/index.php?showtopic=6203
It depends what transmission you have as to what ATF to use. 3.4 cars used the ZF transmission which uses Esso LT71141 fluid, wheras the 3.6 cars use a Mercedes transmission and Shell 3403-M115 fluid. IMO you should stick to the recommended ATF.
The capacity is around 8/9 litres respectively, but you would be lucky to drain half that amount when doing a change.
HTH
From experience of Boxster Tip transmissions and what I have read about 996 ones going BANG I would tend to agree at 60k being the absolute maximum between transmission fluid changes.
During one of my tiptroninc explosions I had the transmission rebuilt by ZF who told me that they do not know what Porsche were thinking when they specified a 90k interval, they recommend for high performance cars that its changed every 40k or 4 years!!
One of the Boxster owners in my group of friends drives to italy on a regular basis and now has 160,000 miles on his Boxster S tip without issues, but by having the transmission fluid changed every 40k.. he does not take it easy on the trans either has it visits the nurburgring every time he goes out to italy or on his way back if its a tourist day within 48 hours of his eta there!
Aparently the most common failure is the transmission fluid breaking down, which causes the clutch packs to wear out, which then turns the fluid darker in colour as the deposits of clutch pack accumulate as sludge in the transmission
On the other hand I sound like I know what I am talking about but I am only saying what they said to me! lol
btw jonbentley, what did you mean when you said it seems fine except immediately on start up. OPC will sell you the fluid by the litre for £17 +vat or you can google ESSO LT71141. I got 2 gallons for about £75 inc delivery from www.northwiltslubricants.co.uk
This is a source reference. Confirm exact model applicability in the original material.
