Page 2 of 2 FirstFirst 12
Results 11 to 16 of 16

Thread: Gearbox fluid change

  1. #11
    Senior Member Andy K's Avatar
    Join Date
    Oct 2008
    Location
    UK
    Posts
    3,249
    Post Thanks / Like
    I have done it on a ZF 6

    You measure what you take out using 5 litre oil bottles. Put back in the same amount to get a good starting point.

    And then check level as per manufactures instructions.

    The temperature range is quite wide.
    The key is for it to not be too hot.

  2. #12
    Senior Member
    Join Date
    Dec 2015
    Location
    Norfolk
    Posts
    981
    Post Thanks / Like
    Hi Minstrel,

    I'm sure that Andy K is just trying to save you money, nothing wrong with that. One thing he has forgotten is that without dropping the sump, there will be around 1 to 1.5 litres of fluid retained there. My procedure without a machine would be. Drop the drain plug, drop the sump, remove mechatronic unit, which will drop the torque convertor fluid or most of it. Jack the front of the car up as high as possible to tip most out, lower car, undo the cooler line at the cooler to drain cooler and line. It is quite involved and the main reason why most would use an exchanging machine. Also, flushing the system can have real benefits and this can't be done without a proper change of fluid.

    Ok, to answer your question. It is always advisable to change the filter, so I do not agree with the advice from the LR specialist. If funds are tight, a flush and full exchange of the fluid is the most important thing and quite outstanding results can be achieved. If you don't mind changing a sump/filter, which usually can add £150 to the job, then a new sump is desirable. But second to changing all of the fluid. The exchanging machine works by pressing ambient temperature fluid against hot fluid and will press all of the fluid through the cooler, lines, sump and torque convertor, so changing lets say more than 95%. They have been designed to do the job, which is difficult without one.

    You do have a sump pan, so why not do this, if and only if you are handy and able. Jack the car up and change the sump pan yourself. Top up with your fluid through the level plug. Run the car to temp ( 35-50 degrees ) and whilst running top up to level. Run the car for however long you wish as the new filter pan will not get too clogged from old fluid in say the first 1000 miles, and half of your fluid is new. Go and have a flush and exchange of fluid when ready. Use Febi or Ravenol or Mannol for example and that fluid will be cheaper, so check with the Specialist. Job should be around £250 for flush and exchange plus vat. You may decide to not have the exchange of fluid if you are happy enough with how it runs.

    When I sell the machine, I advise a 40000 mile flush and exchange schedule, and an 80000 mile flush, filter and exchange. Every customer has their own take on this. What we advise is not always what they do! And of course, it is their garage as it is your car.
    XF 3.0 D Luxury 2010. And no, chemical fixes can be handy, but do not replace technicians.

  3. Likes P700DEE liked this post
  4. #13
    Senior Member
    Join Date
    Aug 2015
    Location
    N Devon
    Posts
    276
    Post Thanks / Like
    Great information thanks.
    i would always use ZF fluid as I had a problem with the TC my 2010 XJL shortly after having the gesrbox flushed and the fluid replace with none ZF fluid I think it was Revenol fluid used total job cost around £300,Jaguar quoted about £700,
    i of course realise the TC may have been on its way out anyway only done 80000 miles, it just seems a bit of a coincidence that it should start playing up about a month after having the fluid changed and only a few 100 miles driven , ending up with a recon TC being fitted and fluid replace withn ZF fluid costing me £1300 so this turned out to be a very expensive gesrbox job
    This is why I am concerned about getting my x308 done I will definitely only use the ZF fluid I have obtained a kit fro ZF this has all the parts required for a fluid changed including gaskets and drain/fill plugs plus 7lts fluided
    XJL

  5. #14
    Senior Member Andy K's Avatar
    Join Date
    Oct 2008
    Location
    UK
    Posts
    3,249
    Post Thanks / Like
    1) I'm not sure the 5 speeds have a "mechatronic unit" as such. But they have a valve body.
    In any case removing it don't drain the torque convetor.
    Not much point in removing the valve body on the 5 speed.

    2) The procedure above just appears to be more work for no gain.
    If getting under the car to change the filter, you may as well drain the TC and get the fresh ZF fluid in. Job done
    XJR 2001 Pacific Blue
    Range Rover Sport 2005 Red 2.7 TD

  6. #15
    Senior Member
    Join Date
    Dec 2015
    Location
    Norfolk
    Posts
    981
    Post Thanks / Like
    Quote Originally Posted by Andy K View Post
    1) I'm not sure the 5 speeds have a "mechatronic unit" as such. But they have a valve body.
    In any case removing it don't drain the torque convetor.
    Not much point in removing the valve body on the 5 speed.

    2) The procedure above just appears to be more work for no gain.
    If getting under the car to change the filter, you may as well drain the TC and get the fresh ZF fluid in. Job done
    It was the retention of sump fluid that was the question Andy, and your procedure would have changed most but there is at least a litre retained in the sump pan that will not drain through the sump plug. Yes, if it is a 5HP24 then it will have a valve block. You obviously have a pretty good knowledge of what you are doing to your vehicles, but you have to realise that not all that on this Forum are as able to drain the system.

    Personally my Jaguar would go on an exchange machine because I want all of the fluid changed and don't want to chance leaving any in there. Preserving the gearbox is well worth a few hundred quid to most. Everyone has there own take on what is right and what they would do.
    XF 3.0 D Luxury 2010. And no, chemical fixes can be handy, but do not replace technicians.

  7. #16
    Senior Member
    Join Date
    Aug 2015
    Location
    N Devon
    Posts
    276
    Post Thanks / Like
    So my kit has arrived from ZF very quick service(next day) in it is 7 bottles of ZF fluid, a new fill plug, a new drain plug, a new magnet a new filter,and a new sump gasket, the car is going into my local garage( he has 3 Jaguars of his own) I have full confidence in them, the change of fluid will be done without a flush, if the fluid coming out is really crappy looking then maybe have it drained again (after doing a few miles) without dropping the sump and refill with fresh fluid or maybe go for a full flushing and fluid change
    Funny thing is the gearbox is really smooth now so i hope all this doesn’t mess it up-
    XJL

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •