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tansfer case fluid

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by kustom71, Dec 18, 2003.

  1. kustom71

    kustom71 1/2 ton status

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    I know it has been covered but i just checked out my gm service manual and for a full-time tansfer case it says motor oil,for a part-time case it says gear oil.My question is if you convert a 203 to part-time shouldnt you use gear oil then??????Truck is 77 /forums/images/graemlins/truck.gif
     
  2. az-k5

    az-k5 1/2 ton status

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    10W-30
     
  3. 83ZZ502_Jimmy

    83ZZ502_Jimmy 1/2 ton status

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  4. lukebaby1

    lukebaby1 1/2 ton status

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    10w-30 synthetic
     
  5. crazy427

    crazy427 1/2 ton status

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    10w-30 synthetic
    IZZ Slipperierier
     
  6. kustom71

    kustom71 1/2 ton status

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    ok thanxs just wanted to check!!!!!!!!!!!!!!!!! /forums/images/graemlins/rotfl.gif
     
  7. lukebaby1

    lukebaby1 1/2 ton status

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    10w-30 synthetic will take heat better too. doesn't break down as easy a mineral oil /forums/images/graemlins/angryfire.gif
     
  8. K30CJ

    K30CJ 1/2 ton status

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    Good timing for this post. I was checking over my '78 beater that I just bought, and found it had gear oil in the NP203. It has a part time kit in it, so I was wondering if gear oil was recommended after the kit was installed. I'll change it to 10W30 syn.
     

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