best oil in your tranny and t-case

Discussion in '40- & 55-Series Tech' started by Elijah, Aug 4, 2005.

  1. Elijah

    Elijah

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    what's the best oil and weight for your stock 4- speed and t-case?? have about 75,000 miles on them.
     
  2. jjhancock

    jjhancock

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    may want to check this thread: https://forum.ih8mud.com/showthread.php?t=53416

    overall, you want a good GL-4 like Redline in your tranny and t-case. GL-5 is rated higher than your GL-4, however it's got some additive in it that's not good for your synchros. I went with Redline MT90, but have yet to do the fluid change. Good luck.
     
  3. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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    Any quality 80W90 gear oil will work just fine....



    Good luck!


    -Steve
     
  4. StanCruiserMan

    StanCruiserMan

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