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Strange 722.6 Gearbox Question

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by Stuartph600, Jun 12, 2018.

  1. Stuartph600

    Stuartph600 Senior Member

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    Ok

    What colour should the oil be in a 722.6 transmission , even when dirty

    And how should it smell ?

    Also should the oil be very thin or quite thick
     
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  2. LostKiwi

    LostKiwi Senior Member

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    Clean oil should be cherry red in colour becoming brown to black as it gets old.
    It should smell slightly sweet but when old smells burnt. It should be thin, watery almost when hot. If in doubt change it.
     
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  3. OP
    Stuartph600

    Stuartph600 Senior Member

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    It shouldn't smell like gear oil 75w90 stuff or be as thick as it?
     
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  4. LostKiwi

    LostKiwi Senior Member

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    Absolutely not!
     
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  5. OP
    Stuartph600

    Stuartph600 Senior Member

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    i changed the gearbox electrical socket , to see if that might help with my problem

    But the oil that came out smelt like gear oil and not very thin

    Toast gearbox putting car into limp mode maybe
     
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  6. LostKiwi

    LostKiwi Senior Member

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    A STAR session will soon show if that's the case. I may be over your way in the next few days and could bring STAR with me if it helps?
     
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  7. OP
    Stuartph600

    Stuartph600 Senior Member

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    I might take you up on that offer , thats very kind
     
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  8. steveq

    steveq Senior Member

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    Hi,

    It is a red colour in the can. That will change over time to become darker but should still have a red tint.

    It shouldn't have a burnt smell.

    It is quite thin.

    (apologies -- I delayed typing and saving the response and LostKiwi beat me to it)
     
    Last edited: Jun 12, 2018
  9. John Laidlaw

    John Laidlaw Senior Member

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    They used to say a slight ‘Cherry’ smell but certainly shouldn’t smell badly or be thick and burnt!
     
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  10. OP
    Stuartph600

    Stuartph600 Senior Member

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    Its thick and just smells wrong to me
     
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  11. John Laidlaw

    John Laidlaw Senior Member

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    Needs to not be in there....
     
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  12. alexanderfoti

    alexanderfoti Moderator

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    Somebody might have added a load of "stop slip" to it in attempt to fix something.
     
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  13. bembo449

    bembo449 Senior Member

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    its similar to cooking oil in consistency pal but echoing what the others have said , if your gut tells you its wrong , change it , cheaper in the long run
     
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  14. OP
    Stuartph600

    Stuartph600 Senior Member

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    old oil drained out today , it defiantly smells of gear oil but its not totally gear oil

    i've run a magnet through the oil no swarf so far
     
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  15. Wighty

    Wighty Senior Member

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    There is normally a magnet in the sump . You know there is a filter in the sump as well ?
     
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  16. OP
    Stuartph600

    Stuartph600 Senior Member

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    Yes i did know , i don't want to change the filter yet

    The sump plug has been chiselled off before !!
     
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  17. Wighty

    Wighty Senior Member

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    Wont the filter be blocked by all that sludgy oil ?
     
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  18. OP
    Stuartph600

    Stuartph600 Senior Member

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    Yeah its possible but its least of my worries at moment
     
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  19. LostKiwi

    LostKiwi Senior Member

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    What's up Stuart?
     
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  20. OP
    Stuartph600

    Stuartph600 Senior Member

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    Just the same fault its had for ages , just thought id go in different direction to fix it
     
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