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Thread: Best Brand & Weight of Oil for both diffs & Transfer Case Disco 1

  1. #1
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    Best Brand & Weight of Oil for both diffs & Transfer Case Disco 1

    Hi,

    Whats the general opinion on the correct oil for the above 1998 D1, I'm running 75/140w fully syn Valvoline all around, might be an over kill?

    I still get the tranny whine around 100km/h, looking for a good oil to try and quieten it down just a bit.

    Cheers

    Jim

  2. #2
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    I thought all except the g/box was 90w ....

  3. #3
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    90W EP when I had a Disco, County, and my RRCs
    Ron B.
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    Quote Originally Posted by jimbob292 View Post
    Hi,

    Whats the general opinion on the correct oil for the above 1998 D1, I'm running 75/140w fully syn Valvoline all around, might be an over kill?

    I still get the tranny whine around 100km/h, looking for a good oil to try and quieten it down just a bit.

    Cheers

    Jim
    Overkill but fine for everything except r380

  5. #5
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    75/140 is probably ok for the diffs in Dubai but a definite overkill for the LT230.
    Put the spec 80/90 in the transfer case and if it still makes excessive noise
    you may have to delve deeper.

    Cheers,
    Paul.
    Paul.

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    I thought I was wrong once, but I was mistaken.

  6. #6
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    Thanks for the replys guys.

    Dropped the transfer case this morning, filled it back up with 80/90 EP.

    will see how I go on.

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