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gearbox oil

Discussion in 'Z3 Roadster & Coupé' started by richone55, Nov 19, 2014.

  1. richone55

    richone55 Newbie

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    can someone tell me what oil and how much will i need to fill my gearbox on my z3 3.0 please
     
  2. David

    David Zorg Guru (III)
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    This is @Southernboy 's area of expertise, I'm sure he'll be along shortly with some advice.
     
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  3. t-tony

    t-tony Zorg Expert (I)
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    To be honest Richard, you are best served to go to your local retailer be it Andrew Page, Euro Car Parts or whoever and ask them what grade oil and what volume you need. This subject has been covered on here several times this last year and will only confuse the issue IMHO.:)

    Tony.
     
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  4. richone55

    richone55 Newbie

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    will do thank you
     
  5. jonco

    jonco Zorg Guru (III)
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    The TIS usually quotes gearbox fill as 1.1 litre but I have seen 1.3 quoted on some sites. There should be a coloured label on the gear box showing oil type required.
    Opie oils are very good for brand recommendations. http://www.opieoils.co.uk/
     
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  6. Brian H

    Brian H Zorg Guru (V)
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    +1 for opie oils, give them a call and they will see you right.
     
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  7. vintage42

    vintage42 Dedicated Member
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    Gearbox does not take oil. It takes ATF-based fluids, often called MTFs, with a viscosity of around 7.5, of which there are several.
     
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  8. vintage42

    vintage42 Dedicated Member
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    My box shows oil on the fingertip at 1 quart so I don't buy a second quart. I looked at http://www.opieoils.co.uk/c-1432-atf-automatic-transmission-fluid.aspx and did not see anything of an MTF nature.

    BMW specifies a fluid a viscosity around 7.5.
    Here's a list of fluids meeting the viscosity specs, available in the US. Links are provided only to show the products. Pentosin is a German company so I assume it markets to the UK.

    BMW MTF-LT-1 (stock original fluid, replaced by BMW MTF-LT-2, made by Pentosin)
    Viscosity at 100C = 7.5 cSt

    Dexron III (an original replacement fluid)
    Viscosity at 100C = 7.4 cSt

    BMW MTF-LT-2 75W80
    Viscosity at 100C = 7.7 cSt
    http://www.ecstuning.com/BMW-Z3-2.8-...rain/ES197386/

    Pentosin MTF 75W80 (same fluid as BMW MTF-LT-2)
    Viscosity at 100C = 7.7 cSt
    http://www.ecstuning.com/BMW-Z3-2.8-...ain/ES1893847/
     
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  9. richone55

    richone55 Newbie

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    thanks for all your help
     
  10. Rudyrov

    Rudyrov Zorg Legend
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    I used Royal Purple Synchronous Synthetic Transmission fluid a while back, worked great and helped to improve the smoothness of the shifter. I believe I bought 2 quarts.
     
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  11. t-tony

    t-tony Zorg Expert (I)
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    How much actually went in Rudy? According to Carweb a 3.0 manual gearbox should hold 1.2 ltr.

    Tony.
     
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  12. Rudyrov

    Rudyrov Zorg Legend
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    A little over 1 bottle. The calculation says 1.3 qts. I gave ha friend the balance of the second quart, so cant go back and look...Sorry.
     
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  13. t-tony

    t-tony Zorg Expert (I)
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    No worries thank you.
     
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  14. vintage42

    vintage42 Dedicated Member
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    I replaced the 17-year old original "lifetime fill" with RP Synchromax and the fresh clean fluid was an improvement. I am sure any of the other MTFs of the same viscosity would feel the same.
    The Bentley Manual says the transmission will hold 1.1 quart. I bought two quarts, but after feeling with my finger tip that the first quart brought the level up to the filler hole, I didn't open the second quart.
    I suppose the 1.3 quarts figure is a result of people measuring .7 quart left in their second bottle, after the transmission takes the .1 quart and the other .2 quart flows out before it can be stopped.
     
    #14 vintage42, Nov 20, 2014
    Last edited: Nov 20, 2014
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  15. richone55

    richone55 Newbie

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    thank you i will get it done this weekend and thank you all for your help
     

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