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Gear Oil

Discussion in 'Troubleshooting & Diagnosis' started by GPN, Jul 16, 2020.

  1. Jul 16, 2020 #1
    GPN

    GPN Veteran Member

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    Best/Recommended for Manual Borg Warner T10?
     
  2. Jul 16, 2020 #2
    Gary S

    Gary S Administrator Lifetime Gold Member

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    The book calls for 80W-90 gearlube. If you are using synthetic lube, 75W-90 is the same thing with better low temperature performance.
     
  3. Jul 16, 2020 #3
    GPN

    GPN Veteran Member

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    Thank you
     
  4. Jul 17, 2020 #4
    Gary S

    Gary S Administrator Lifetime Gold Member

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    Also, you want GL4 rated fluid, not GL5 rated fluid. GL5 is for rear differentials and can have additives that corrode brass.
     
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  5. Jul 17, 2020 #5
    GPN

    GPN Veteran Member

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    Tnx
     
  6. Jul 18, 2020 #6
    COPO

    COPO Veteran Member Lifetime Gold Member

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    GL5 tranny fluid did not corrode my Muncie synchros when I used to use it for many years.
    I also used it in the BW trans in the 77-81 Z28’s.
    C93E94B5-EFD8-4171-8013-4BCA8F4C828D.jpeg
    8B27464F-FC99-4532-8C32-D4AFCD8E5911.jpeg
     
  7. Jul 18, 2020 #7
    Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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  8. Jul 23, 2020 #8
    GPN

    GPN Veteran Member

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  9. Jul 25, 2020 #9
    Gary S

    Gary S Administrator Lifetime Gold Member

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    Amsoil has a lube very similar to the Redline product. Amsoil MTG is specially designed for older manual trannys and is GL4 rated.
     

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