Differential Fluid Replacement Tips

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  • Thomas Reynolds
    Noobie
    • Nov 2015
    • 12

    #1

    Differential Fluid Replacement Tips

    The drain and fill plugs are M10 Hex. Torque them back to 55NM. The crush washers are 22mm inside diameter. One can be found locally at O'Reilly's, Autozone, or Advance Auto in the Dorman 66222 copper crush multipack:
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    Also for the fluid the latest good fluid and what I used which has NO friction modifiers for quicker lockup is Mobil Delvac 1 75w-90 Gear Oil
    Found at Amazon. You will need a little less than 2 quarts so save the rest for your next diff oil change. Everything I found locally has some sort of friction modifier included.
    http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1


    Click image for larger version

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  • digger
    R3V Elite
    • Nov 2005
    • 5912

    #2
    the drain plugs on mine are 14mm internal hex
    89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

    new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

    Comment

    • Vincenze
      E30 Modder
      • Apr 2019
      • 914

      #3
      It's often impossible to unscrew the top drain plug without a special small socket.
      I believe it's this one: https://www.ecstuning.com/b-vim-tool...et/vim614~vim/

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      • digger
        R3V Elite
        • Nov 2005
        • 5912

        #4
        I use a normal hex drive but you can’t get ratchet on but I just put a ring spanner on the hex
        89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

        new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

        Comment

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