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sm465 fluid?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by BowtieBlazer, Sep 14, 2001.

  1. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    What do you guys out there with the 465 run in your tranny?

    I was told to go with the sludge 85-140w

    1985 GMC C-10 Shortbed
    1984 Chevy K-5 Blazer
    1982 Chevy C-10 Longbed
     
  2. thatK30guy

    thatK30guy 1 ton status Premium Member

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    85-140 is fine.

    The more common oil is the 80-90 weight oil, which I use.

    <font color=red>I'm a "black top mudder"!!!</font color=red>

    <a target="_blank" href=http://coloradok5.com/gallery/thatK30guy>http://coloradok5.com/gallery/thatK30guy</a>
     
  3. Pugsley

    Pugsley 1/2 ton status

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    I put 85W140 in mine in the dually - I like good heavy oil[​IMG]

    Special thanks to those lost from IAFF Locals 94 and 854 - You shall never be forgotten
    <a target="_blank" href=http://pugsley.alloffroad.com>pugsley.alloffroad.com</a>
     
  4. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    It might help to mention that if your truck sees any cold weather at all 80 W 90 might be a better choice.

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
     
  5. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    South Louisiana....it gets below freezing about a week out of the year and thats not consecutively

    1985 GMC C-10 Shortbed
    1984 Chevy K-5 Blazer
    1982 Chevy C-10 Longbed
     
  6. simpleman83

    simpleman83 1/2 ton status

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    I just changed my clutch and I'm going to replace the fluids too. Can I use the 85W140 in the NP208 also? Or should I use something else? I'm in GA so, probably don't need the lightweight stuff either...
     
  7. cegusman

    cegusman 3/4 ton status

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    trans fluid in the 208
     
  8. simpleman83

    simpleman83 1/2 ton status

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    Why not just use trans fluid in both then? I assume Dextron/Mercon III or whatever....
     
  9. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    the sm465 is purly metal on metal gears and was designed in the 60s so gear oil is what it calls for. The 208 is an 80s design with gas milage considered thats why its designed to be used with the much lighter weight ATF.
     

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