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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH981 2.7 base PDK service - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Replace but not everyone does
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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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.
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Suggestion
The pan 'should' be changed but not everyone does.
981 2.7 base PDK service - Page 1 - Boxster/Cayman - PistonHeads UK
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Leading evidence: 'Replace but not everyone does' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace but not everyone does' (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 contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
The clutch fluid is easy as it doesn't need PIWIS whereas the transmission fluid change needs to be performed through PIWIS as it peforms a number of function tests, although some have stated that for a straightforward flush and refill PIWIS is not required?
981 2.7 base PDK service - Page 1 - Boxster/Cayman - PistonHeads UK
Replace needs
No successful repair reported for this finding.
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Reported fixes
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Unsuccessful attempts
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Discussions that contain suggestions
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
The clutch fluid is easy as it doesn't need PIWIS whereas the transmission fluid change needs to be performed through PIWIS as it peforms a number of function tests, although some have stated that for a straightforward flush and refill PIWIS is not required?
981 2.7 base PDK service - Page 1 - Boxster/Cayman - PistonHeads UK
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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.
PistonHeads: 1 discussions
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Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
My (new to me) 2.7 base 981 Boxster is just over 11 years old now and I’ve decided to get the PDK service done a bit early for peace of mind. The car has just ticked over 70k miles so it’ll be due on time not miles.
Chatting to my local specialist, there seems to be a bit of confusion over exactly what needs doing. He seems to think that only the clutch oil needs changing and the transmission oil doesn’t need doing. The service book does suggest both need doing but it’s written a bit ambiguously and muddies the waters with talk of 4wd 911s in the same section.
Looking at PDK service packs online at the likes of Design911 etc for those happy to DIY they also come with the plastic sump pan with integral filter and the associated gasket and bolts. Does this also need to be changed?
If anyone can shed some light on which of the 3 options is correct, I’d be most grateful!
Thanks, as you say some good info on there.
Despite the large amount of misinfo on the web, it seems the correct answer is both fluids need doing but that the sump pan, bolts and gasket is overkill and not necessary. Will speak to my specialist on Monday.
IIRC Clutch fluid change is at 60k miles (6yrs?) and transmission fluid at 120k (12yrs) so if that's the case both will now be due.
The clutch fluid is easy as it doesn't need PIWIS whereas the transmission fluid change needs to be performed through PIWIS as it peforms a number of function tests, although some have stated that for a straightforward flush and refill PIWIS is not required?
The pan 'should' be changed but not everyone does. Kit should be c£200-£250 with pan and fluid from third party. Example
Here
ETA: Useful DIY thread and video
HERE
Edited by Armitage.Shanks on Sunday 10th March 22:59
This is a source reference. Confirm exact model applicability in the original material.
