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Transmission oil colour:

Y83OLK Aug 13, 2010

  1. Y83OLK

    Y83OLK Hulk Smash!

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    Hi all.
    Changed my gearbox/ transferbox and rear diff oil today.
    Has anyone else done this themselves?

    The gearbox/trannybox oil came out a clearish yellow colour, but the rear diff oil was nearly black.
    Guessing i have an issue going on in the diff somewhere?

    Refilled it with OEm fluid (75/90 i think) which was a lovely red colour... Which has made gearchanges less crunchy and no whine on over run now.

    Any idea why the diff oil could be so dark?
     
  2. s3dave

    s3dave TFSI Hybrid Supporter

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    how much oil is needed for the gearbox mate, mine has a slight whine
     
  3. Y83OLK

    Y83OLK Hulk Smash!

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    Mine took just over 3ltr.
    2 3/4...a quick spin up through the gears then an extra half a litre to top up.
     
  4. s3dave

    s3dave TFSI Hybrid Supporter

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    did not think they took that much cheers anyway, as the whine deff gone then?
    i would not worry about the colour of the oil, its replaced now and working fine....
     
  5. sportstractor

    sportstractor Chugger

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    I would also not worry about the colour aslong as it not frothy
     
  6. Broken Byzan

    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User quattro Audi A4

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    The colour is more likely due to the load it has been put through etc .

    As long as its now changed and it feels better i wouldn't worry, in fact i might do mine later...
     
  7. Y83OLK

    Y83OLK Hulk Smash!

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    Just thought it may be a sign of bearing/ gear wear or something.
    Glad there were no big metal lumps/ gold coloured swarf stuck to the drain plugs though.

    My whines definatly gone, it used to happen coasting in 1st or 2nd, now all i hear is tyre/ road noise.
     
  8. rraghvani

    rraghvani Whoever does not try, does not learn.

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    Silly question, but where do you put the gearbox oil in? I can’t find any references to toping up the gearbox oil in the cars manual or this web site.
     
  9. rossbrownlee

    rossbrownlee Ross_S4

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    Look under the front bumper roughly in front of the passenger seat. You will see a curly black pipe going back and forth, that's for the power steering, just behind that on the front of the gearbox there is a plug maybe about an inch in diameter.
     
  10. gavin89

    gavin89 Wana go Low gotta go Slow

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    How much did you pay for it?
     
  11. rraghvani

    rraghvani Whoever does not try, does not learn.

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    Would it be possible to upload a photo of this? Thanks.
     
  12. S3 TAM

    S3 TAM Pocket now empty

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    Another job for the weekend gearbox and rear diff oil. LOL
     

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