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rear axle oil

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5Psycho, Jan 11, 2003.

  1. K5Psycho

    K5Psycho Registered Member

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    anyone know how much gear oil the front and rear axles take.
     
  2. Highlander

    Highlander 1/2 ton status

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    About 3qt of something like this /forums/images/graemlins/thumb.gif /forums/images/graemlins/thumb.gif

    Eric
     
  3. heavy4x4

    heavy4x4 1/2 ton status

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    Chiltons says:

    Front: 3.5 pts (1.75 qts)
    Rear: 4.2 pts (2.1 qts)

    Use a GL-5 80W-90 gear lube....unless the rear has a gov-lock. If that's the case, the rear will take some special limited slip lube (I think).
     
  4. 76k5Blazer

    76k5Blazer 1/2 ton status

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    GL 5 has the friction modifer already added to it /forums/images/graemlins/thumb.gif
     
  5. 79Beast

    79Beast 1/2 ton status

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    Unless you have a diff that NEEDS limited slip additive, use GL4. GL5 is the same stuff except it has sulfer added to it (that's what the additive is) which will combine with water to make sulfiric acid. So, if your diffs will see any water, and you don't need the additive, GL4 is safer.
     

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