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Thread: diff and tranny fluid

  1. #1

    Default diff and tranny fluid

    hi guys, my msm has almost 20k miles on it and I figure its time to change out the tranny and differential fluid. I am planning on putting redline synthetic fluids in both. can anyone tell me the capacities of both units and which viscosity fluids to go with. thanks for any help!

    alex

  2. #2
    Team Cheap Bastard
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    Check your owner's manual for capacities. A lot of forum members like the Mobil-1.

    See this LINKIE

  3. #3

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    Second on the Mobil 1... I used RedLine in the other diff and I've felt no difference.

    Now for the price, my wallet felt the difference between the pricey RedLine and the TCB Mobil 1.

  4. #4

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    If you buy your Redline from Shuhart, it's cheaper than Mobil1 at vato Zone.

    75-90 for the Diff, MTL or MT-90 for the Tranny. You'll have to try both to see which you prefer in the tranny. I liked the MT-90 better, but alas, shuhart1 only has the MTL. OTOH, I now run Mobil1 in both, since my tranny feels better to me with the Mobil1.
    Maybe 4 wheels aren't so bad after all... wickett.org
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  5. #5
    Obnoxious at any speed altiain's Avatar
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    Tried Redline (MTL iirc) in the tranny, worked great for 3-4k miles, then got really notchy. Mobil1 doesn't seem to share the same problem. I use Mobil1 75w90 synthetic gear oil in both the tranny and the diff now.
    Iain

    "We don't stop playing because we grow old, we grow old because we stop playing." - George Bernard Shaw

  6. #6

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    Quote Originally Posted by altiain
    I use Mobil1 75w90 synthetic gear oil in both the tranny and the diff now.
    Same here!

  7. #7

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    thanks for the help guys! i think i have a few bottles of redline sitting in my garage, but if it isnt enough i will go with the mobil 1, it really is a pain to find the redline and its more expensive. is there anything special to know when changing out these fluids or is it pretty straight forward?

  8. #8

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    Good stuff on "how-to" on this page!

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