Gearbox oil to change or not to change?
#1
Gearbox oil to change or not to change?
I am about to service my XK, it's covered 110,000 and I dont think the gearbox oil has ever been touched.
I've done a bit of reding and this seems to be a bit of a grey area.
What are the general thoughts on changing servicing the box?
What oil should I use if I drain and fill it?
The box is fine and I have no issues with it.
Thanks in advance
I've done a bit of reding and this seems to be a bit of a grey area.
What are the general thoughts on changing servicing the box?
What oil should I use if I drain and fill it?
The box is fine and I have no issues with it.
Thanks in advance
#2
You don't state the model year but I assume with that mileage it is pre '03 and has a ZF 5HP24 transmission. Jaguar says it is 'filled for life'. Not sure if it is the owner's life or the transmission's but either way that is BS.
ZF now recommends a 60k mile fluid change so you are about 50k miles over due.
That transmission uses LT 71141 specification ATF. That is available for $5, $12, $14, $20, $49 or more per quart. Your choice.
This has been a never ending discussion on the subject. Here is a link to just one: https://www.jaguarforums.com/forum/x...ping-up-29776/
ZF now recommends a 60k mile fluid change so you are about 50k miles over due.
That transmission uses LT 71141 specification ATF. That is available for $5, $12, $14, $20, $49 or more per quart. Your choice.
This has been a never ending discussion on the subject. Here is a link to just one: https://www.jaguarforums.com/forum/x...ping-up-29776/
#4
Replace It
This is from a non-DIYer. Research (mechanics, magazines) convinced me to have it done.
Replaced it in my '98 at 70K. Had it done at an AAMCO tranny shop. They dropped the pan, replaced the filter, and used a Mobil 1 synthetic ATF (there may be more than one Mobil synthetic). Cost about $425.
Works perfectly and I like the peace of mind.
Replaced it in my '98 at 70K. Had it done at an AAMCO tranny shop. They dropped the pan, replaced the filter, and used a Mobil 1 synthetic ATF (there may be more than one Mobil synthetic). Cost about $425.
Works perfectly and I like the peace of mind.
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Sorry, lost my password. Don't know why this site is so difficult to get into and move around in.
Had it flushed 16 months, but only 2,000 miles, ago. I thot it operated more smoothly than before, but could be imagining.
They said Jag fluid would be $100 more, and the M1 was the same formulation. About 1/2 of the expense was the M1; I guess the synthetic is expensive. Maybe there's a cheaper conventional fluid. I think I saw a thread in here with all the fluids.
The AAMCO invoice had only the tranny overhaul warranty printed on it and said (essentially) for other services, ask. I did not, so I don't know.
Good luck!
I'm going to put up a posting called "before you buy, read this" relating this and my other weird experiences. You might want to check it out.
Had it flushed 16 months, but only 2,000 miles, ago. I thot it operated more smoothly than before, but could be imagining.
They said Jag fluid would be $100 more, and the M1 was the same formulation. About 1/2 of the expense was the M1; I guess the synthetic is expensive. Maybe there's a cheaper conventional fluid. I think I saw a thread in here with all the fluids.
The AAMCO invoice had only the tranny overhaul warranty printed on it and said (essentially) for other services, ask. I did not, so I don't know.
Good luck!
I'm going to put up a posting called "before you buy, read this" relating this and my other weird experiences. You might want to check it out.
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I own two of the six-speed ZF boxes, one in our 2005 S-Type and one in our 2006 XK8. I've done quite a bit of research, including speaking with ZF's tech support group in Chicago, and my plan is to do drain-and-fills when the vehicles reach 90,000 miles or so. That is conditional upon the ZF's electrical connector sleeve not developing the dreaded leak that these boxes seem to be prone to. A sleeve leak will force my hand to go ahead with a drain-and-fill....
Our S-Type is approaching 70,000 miles with a perfectly-functioning ZF. Our XK8 is approaching 39,000 miles and also has a perfectly-functioning ZF. I will always wish that these ZF boxes had dipsticks and engine compartment-mounted fill tubes. Sure would be a lot easier to do the ATF drain-and-fills if they did....
Our S-Type is approaching 70,000 miles with a perfectly-functioning ZF. Our XK8 is approaching 39,000 miles and also has a perfectly-functioning ZF. I will always wish that these ZF boxes had dipsticks and engine compartment-mounted fill tubes. Sure would be a lot easier to do the ATF drain-and-fills if they did....
Last edited by Jon89; 03-20-2012 at 01:50 PM.
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