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  1. grunt11b40x

    grunt11b40x 1/2 ton status

    Joined:
    Mar 1, 2003
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    Location:
    winston salem, nc
    just wondering if anyone has some recomendations on the type and weight of front and rear diff lube and np203 lube (stock 75 blazer).
    now days there are just way to many on the market and each one claims to be the best.
    thanks.
     
  2. Blue85

    Blue85 Troll Premium Member

    Joined:
    Jul 26, 2000
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    Location:
    Grand Rapids area
    Axle lube is pretty standard. Seems like 10W80 works in anything, with the exception of cluth limited slips, which sometimes need something special.
     
  3. JSH

    JSH Registered Member

    Joined:
    Oct 20, 2002
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    Location:
    Iowa
    Never heard of 10w80, I use 80w90 for gear lube-believe I used Coastal brand last time. NP203 is supposed to use 10w30 motor oil if i remember correctly.
     
  4. k20

    k20 3/4 ton status

    Joined:
    Sep 9, 2001
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    Location:
    Mineral Springs, NC
    yeh 80w-90 coastal is what i run front and rear...np203 uses 10w-30 engine oil....never heard of 10w-80 either he must have combined the engine oil and the gear oil lol, or maybe its water contaminated gear oil...
     
  5. deek

    deek 1/2 ton status

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    Location:
    Great Bend, KS
    Yep it's 80w-90 & 10w-30
     
  6. grunt11b40x

    grunt11b40x 1/2 ton status

    Joined:
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    Location:
    winston salem, nc
    Thanks guys! now if anyone has a wiring diagram for a 75 blazer I will be in business.
     

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