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What kind of oil do you use in your rear diff?

Discussion in 'XJ Modifications' started by darkangel, Jun 1, 2008.

  1. darkangel

    darkangel Member

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    Well people let me have it...What type of oil do you use in your rear diff.
     
    darkangel, Jun 1, 2008
    #1
  2. RickCoMatic

    RickCoMatic Well-Known Member

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    Sunoco Ultra Gear Oil -- GL5 80W/90 or 85~140
     
    RickCoMatic, Jun 1, 2008
    #2
  3. darkangel

    darkangel Member

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    is 75/90 bad
     
    darkangel, Jun 1, 2008
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  4. schmuckaholic

    schmuckaholic Well-Known Member

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    Not sure about 75, but whatever you get, make sure it's GL-4 spec, and definitely needs to be rated for hypoid gears.
     
    schmuckaholic, Jun 2, 2008
    #4
  5. acergremlin

    acergremlin Member

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    Hypoid gear oil GL4 80/90
     
    acergremlin, Jun 2, 2008
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  6. Gwyndwr

    Gwyndwr Member

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    Hypoid gear oil GL4 80/90
     
    Gwyndwr, Jun 2, 2008
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  7. darkangel

    darkangel Member

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    what happens if I use GL5 80/90
     
    darkangel, Jun 2, 2008
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  8. acergremlin

    acergremlin Member

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    GL5 has additives in it that attacks yellow metal like bronze and as far as i'm aware the final drive has bronze in it.
     
    acergremlin, Jun 2, 2008
    #8
  9. schmuckaholic

    schmuckaholic Well-Known Member

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    I was told the same thing; the same person said, however, that the final drive in the Maxim-X doesn't have those metals, therefore it should be fine. (Just an FYI. Can't speak for other models.)

    Personally, what I'm using in both bikes is "Lucas High Performance Heavy Duty 80/90 Plus Gear Oil".

    http://www.lucasoil.com/products/displa ... 4&loc=show
     
    schmuckaholic, Jun 2, 2008
    #9
  10. coaxial

    coaxial New Member

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    royal purple max-gear 75-140w synthetic "racing" gear oil
     
    coaxial, Jul 16, 2008
    #10

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