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Rear Diff care

old del boy
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Re: Rear Diff care

Postby old del boy » Tue Aug 19, 2014 12:30 am

Bugger , didn't notice that in my enthusiasm :oops:

Derek..
'93 4.0L Daimler, solent blue,
'93 4.0L Daimler, Westminster,
'85 2600 Rover sd1 vdp oporto.

naki_k
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Re: Rear Diff care

Postby naki_k » Tue Aug 19, 2014 1:53 am

rvdz wrote:Yes it seems to be either discontinued or out of stock in most places. The only one I could find is indeed the place that sells 12 bottles at a time but that seems a bit excessive. I've just booked an appointment with my local garage for Friday to have the diff oil changed instead.


there are other oils suitable for LSD too, so its more important to get some fresh oil in there (as it could well be very low), if its going to get regular use. its worth finding out which oil the garage have/ use too. make sure they know its LSD too, dont assume they will know. are you getting them to do the pinion seal too? Wont be too hard with a ramp and all the right tools suppose? do you trust them on the important stuff mind? :?
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 3.2 XJ6 SportPack Manual
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6
93 6.0 XJ81 XJ12
94 4.0 XJR
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

MagicDoormouse
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Re: Rear Diff care

Postby MagicDoormouse » Tue Aug 19, 2014 11:59 am

Hypoid 90 is sufficient even for an LSD if you're struggling to find the Shell stuff....................
1990 Sovereign (Brian)
1994 Sovereign Silver
1993 Daimler (Parkhouse)
1990 XJR Solent
1993 Daimler Double 6
1993 XJR Flamenco
1991 XJS V12
1976 Capri 3.0 V6

rvdz
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Re: Rear Diff care

Postby rvdz » Tue Aug 19, 2014 12:07 pm

naki_k wrote:
rvdz wrote:Yes it seems to be either discontinued or out of stock in most places. The only one I could find is indeed the place that sells 12 bottles at a time but that seems a bit excessive. I've just booked an appointment with my local garage for Friday to have the diff oil changed instead.


there are other oils suitable for LSD too, so its more important to get some fresh oil in there (as it could well be very low), if its going to get regular use. its worth finding out which oil the garage have/ use too. make sure they know its LSD too, dont assume they will know. are you getting them to do the pinion seal too? Wont be too hard with a ramp and all the right tools suppose? do you trust them on the important stuff mind? :?


Yes, I'm sure the guy from the garage knows what he's doing, I've been going there with all my cars for a few years now. I told him the pinion seal is leaking but not sure if it needed to be replaced so he said he'll have a look. I've told him it's an LSD so that should be fine.
Roel

1994 Sovereign 4.0 Auto [698760]

naki_k
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Re: Rear Diff care

Postby naki_k » Tue Aug 19, 2014 1:07 pm

ok, good. always best to make sure, as a late xjr esepcially is not that obviously different to standard 40. i would never assume a garage knew it had an LSD, even a Jag "specialist" :roll:


btw, slight tangent, but related.
when having an MOT done, and they put the car on that rolling brake test thingy in the floor. it tests each wheel at time, ie turns one wheel at a time. but with an LSD it shouldn't let the back wheels move separately beyond the slip.
i told my MOT guy, and he was sure "it would be ok". though i still dont get it, how it can spin one wheel and not mash the diff, or spin the other too :?
Last edited by naki_k on Tue Aug 19, 2014 9:47 pm, edited 1 time in total.
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 3.2 XJ6 SportPack Manual
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6
93 6.0 XJ81 XJ12
94 4.0 XJR
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

MagicDoormouse
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Re: Rear Diff care

Postby MagicDoormouse » Tue Aug 19, 2014 4:59 pm

btw, slight tangent, but related.
when having an MOT done, and they put the car on that rolling brake test thingy in the floor. it tests each wheel at time, ie turns one wheel at a time. but with an LSD it shouldn't let the back wheels move separately beyond the slip.
i told my MOT guy, and he was sure "it would be ok". though i still dont get it, how it can spin one wheel and not mash the diff, or spin the other too :?

They shouldn't put LSD on the rolling road ever! As with 4WD they should use the old school Tapley Meter method.
1990 Sovereign (Brian)
1994 Sovereign Silver
1993 Daimler (Parkhouse)
1990 XJR Solent
1993 Daimler Double 6
1993 XJR Flamenco
1991 XJS V12
1976 Capri 3.0 V6

naki_k
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Re: Rear Diff care

Postby naki_k » Tue Aug 19, 2014 9:49 pm

exactly what i thought :shock: he seemed sure its was fine and it does still work, so who knows.
same withe permanent 4x4 on my rangie
88 3.6 XJ6 PDH/CEM
90 Range Rover Vogue SE 3.9 V8 LPG
91 3.2 XJ6 SportPack Manual
91 4.0 XJ6 Manual
92 4.0 XJR Manual
92 4.0 XJR
93 3.2s - 4.0 Manual conv
93 4.0 Sovereign
93 6.0 XJ81 DD6
93 6.0 XJ81 XJ12
94 4.0 XJR
96 4.0 X306 XJR
96 4.0 X300 D6
97 4.0 X300 Sport Manual
2000 LR Discovery ES TD5 A
Breaking 40/ 300

MagicDoormouse
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Re: Rear Diff care

Postby MagicDoormouse » Tue Aug 19, 2014 10:49 pm

If they're up to date with their software a warning should come up on their screen saying NOT to use the rollers.......
1990 Sovereign (Brian)
1994 Sovereign Silver
1993 Daimler (Parkhouse)
1990 XJR Solent
1993 Daimler Double 6
1993 XJR Flamenco
1991 XJS V12
1976 Capri 3.0 V6

timeout
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Joined: Sat Aug 08, 2015 9:32 am
Location: South Brussels, Belgium

Re: Rear Diff care

Postby timeout » Sun Aug 09, 2015 9:05 pm

I've no idea if I have or not have a limited slip differential. It's probably not the case because I've a plain 4.0s.
But, in case of, is it dangerous if I put oil for non l.s. differential in a limited slip differential ?
'94 XJ6 4.0s Auto with LSD ( Seq: 706305; Gunmetal; Magnolia);
'94 XJ6 3.2s Auto with LSD ( Seq: 692247; Red Flamenco; Droeskin);
~ Dream to have a black interior .. .. I know it was not available on 'S' ~

pimgmx
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Re: Rear Diff care

Postby pimgmx » Sun Aug 09, 2015 9:38 pm

timeout wrote:I've a plain 4.0s

Most Benelux Jaguar dealers have good coverage of the later XJ40 model years: a quick visit to a local dealership with your VIN number at hand should be enough to get you the spec sheet of your Jag.
You most likely have a 'regular' diff as you suggest yourself, but with '40s and their range of options one never knows...
(top tip: go to the dealer's parts desk, rather than through the front showroom door. Not all dealers are too fond of the owners of youngtimer Jags :? )

I would NOT use non-LSD oil for a limited slip diff, EVER!

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