15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHGearbox oil
Leading reported evidence
Use first two
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've used the first two on two cars, but not the latter, sorry.
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 tried to buy it from porsche colchester and they did not stock it as a service quantity, but would sell it to me in 5L quantities if i took in my own container to be filled from their drum in the workshop.
Leading evidence: 'Use first two' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill from their drum in the workshop' (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
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.
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.
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
I tried to buy it from porsche colchester and they did not stock it as a service quantity, but would sell it to me in 5L quantities if i took in my own container to be filled from their drum in the workshop.
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
Don't forget to take the fill plug out before you take the drain plug out....
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Fill from their drum in the workshop
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 tried to buy it from porsche colchester and they did not stock it as a service quantity, but would sell it to me in 5L quantities if i took in my own container to be filled from their drum in the workshop.
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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: 20261027T013556Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Is it for a rebuilt or used gearbox?
If used then this comes recommended Millers Oils TRX Synth 75W-90 Full Synthetic Gear Oil 75W90
From memory just shy of 3 litres is required.
From memory it is 2.7L - sure someone will correct me if im wrong.
I tried to buy it from porsche colchester and they did not stock it as a service quantity, but would sell it to me in 5L quantities if i took in my own container to be filled from their drum in the workshop.
My 996 is due a gearbox oil change, at 96k I suspect it's never been done. I am thinking about Millers after all the positive reviews on the forum and there seem to be 3 options:
Nanodrive
TRX fully synthetic
CRX competition synthetic
I've seen the first two recommended here but the Millers' site recommends the CRX, any experience from anyone here?
Mike
I've used the first two on two cars, but not the latter, sorry.
If it's Miller's it's unlikely to be bad. However I would worry about CRX being a motorsport oil, designed to be changed far more often that a road car?
I agree, I'll call them and ask....
Well I called and I'm more confused now. They seem to think that the CRX will be ok for a road car and is their highest performing oil. However the EE Nanodrive didn't seem to feature with them at all.
As said before, give Olpie oils a ring, very knowlegible and friendly.
The challenge I found when I changed the oil recently is thet the Porsche recomended ones are now only available in 20l quantities which is rather a lot when I only need 2.7l.
On Olpies recomendation I went for Motul gear 300, I have an LSD, not sure if that made a difference to the advice (from what I've read it shouldn't need a different oil).
Rumour has it that Shell Spirax is the factory fill and comes from the OPC in Porsche bottles.
You can buy it in Europe in 1litre bottles, hard to find over here except from OPC.
Do use a decent oil though, I filled with triple qx of the correct spec and the box was awful when cold. A refill with motul sorted it.
Thanks Wasz and Caterman,
various people have reported that a good oil makes a positive difference and I don't plan to change the oil again so I want to get it right.
The oil is cheap enough no matter which I choose and and I had high hopes of Millers given positive reviews but which one? I was very surprised how indecisive they were on the phone!
Shell Sprirax S5 is what will be going in mine if/when I next change it:
http://911uk.com/viewtopic.php?p=853640
Sourced at £14 a litre from here:
https://www.autodoc.co.uk/shell/12754635
