37 t-plane diff/trans oil ?

Unknown
Unknown
edited November -1 in HUDSON
my tranny and diff are orig, and a little looser than new. lol. what is a good grade for my next change. this will be next week, i do not to get the wrong gear oils e.g. too thick ect. thank you all. :)

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  • Geoff
    Geoff Senior Contributor
    Originally the workshop manual specified EP90 in winter and EP110 in Summer, then in 1938 they changed their minds and said EP90 all year round. Oils these days are much superior than 60 years ago, so I would drain the diff and transmission and refill with a modern multigrade 85W/140 gear oil. However, make sure you don't use oil specified for limited slip diffs.

    Geoff.
  • PAULARGETYPE
    PAULARGETYPE Senior Contributor
    Hi I Run Lucas Oil Additive That Is Made For And Engine Supplement I Run It Straight Out Of The Bottle It Is Like A 90 Wt. Oil Is Very Friction Resistant I Have It In My Trans And Diff. No Trouble At All The Transmission Runs About 25 Degrees Cooler Than With 90 Wt Oil
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