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YOUR RESEARCHLockdown jobs - diff oil change on my C4: brain pick
Leading reported evidence
Fill bolt ended up needing a bottle jack
Suggestion or failed attempt
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Suggestion
That fill bolt ended up needing a bottle jack on lumps of wood, to turn a ratchet against the weight of the car to crack it.
Lockdown jobs - diff oil change on my C4: brain pick
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Leading evidence: 'Fill bolt ended up needing a bottle jack' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Fill bolt ended up needing a bottle jack' (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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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
I know what you mean about oil recommendations - there must be literally millions of posts on the internet recommending / debating the topic of the 'best' oil!
Lockdown jobs - diff oil change on my C4: brain pick
Recommend norm
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Suggestion
Demort - which oil do you recommend - norm for cars in general is GL4 for gearboxes and GL5 for differentials, however, 996 gearbox and diff is one unit?
Lockdown jobs - diff oil change on my C4: brain pick
Recommend oil at work and i havent
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Suggestion
i just use the Porsche recommended oil at work and i havent tested any oils unlike you guys so i'm not qualified here .
Lockdown jobs - diff oil change on my C4: brain pick
Use porsche
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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
i just use the Porsche recommended oil at work and i havent tested any oils unlike you guys so i'm not qualified here .
Lockdown jobs - diff oil change on my C4: brain pick
Recommend / debating the topic of the 'best' oil
No successful repair reported for this finding.
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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.
Suggestion
I know what you mean about oil recommendations - there must be literally millions of posts on the internet recommending / debating the topic of the 'best' oil!
Lockdown jobs - diff oil change on my C4: brain pick
Recommend norm
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
Demort - which oil do you recommend - norm for cars in general is GL4 for gearboxes and GL5 for differentials, however, 996 gearbox and diff is one unit?
Lockdown jobs - diff oil change on my C4: brain pick
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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.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
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Generation: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi All,
With all this lockdown business, needless to say the car's off the road (I'm working from home), so I looking at some additional "preventative" maintenance - the first thing is the diff oil on my MY00 C4.
So, (and I'm fully prepared that this might be a stupid albeit simple question!) - I know I need 2 litres of 75w-90 oil for the front diff, but it seems that while I'm doing it, I might as well do the others - which is the crux of my question:-
How many diffs are there (front & rear, but is there a centre?)
Therefore how much oil do I need?
Cheers
Dano
There is no such thing as a Stupid question .. there is merely a search for Knowledge that you don't yet possess ...
There is a front diff and then the gearbox .. this has the diff as part of it and uses the same oil , it's not a seperate oil .
Gearbox oil amount is about 3 ltrs ( 2,7 According to the manual with front diff at 1.5 )
5 ltrs will just about be enough .
http://www.911uk.com/viewtopic.php?t=102887&sid=2953ed7b40888b4c94750f24fada3350
Cheers buddy
Will get a few new washers too.
Still got plenty of time to do it as it's now Narnia outside!
Depends how long lockdown goes on for 😂
Dan
Is it manual or auto? Auto only has gear oil in the differential part of the gearbox.
Top tip - remove the filler plug first! They have been known to seize which is a bummer if you've dropped the oil! Mine needed a breaker bar to crack it undone!
Demort - which oil do you recommend - norm for cars in general is GL4 for gearboxes and GL5 for differentials, however, 996 gearbox and diff is one unit?
Ian
I was glad someone pointed this out to me before I dropped my gearbox oil.
That fill bolt ended up needing a bottle jack on lumps of wood, to turn a ratchet against the weight of the car to crack it. Even "old b*stard", the 4ft length of steel gas pipe couldn't get a good enough purchase on it on the driveway on axle stands.
I tend to avoid this type of question im afraid .. i just use the Porsche recommended oil at work and i havent tested any oils unlike you guys so i'm not qualified here .
Manual gearbox and there is only one oil as diff and box are one unit and share the oil .
I didn't understand the problem with the fill bolt not coming out as i've never had an issue ..
A ramp and a breaker bar work just fine ..
I then read YPVS comment and it made sense .. i really don't envy you guys doing things like this on stands and on your back ..
My Hat off to you all !
Demort,
What you use at work would be nice to know.
I know what you mean about oil recommendations - there must be literally millions of posts on the internet recommending / debating the topic of the 'best' oil!
Cheers
Ian
I can say most of what we use is either mobile 1 or direct from Porsche and that oil is pretty much a blank tub with no descriptions on it .
oil is a parts job and to be honest .. i use what i'm given
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