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Oil weight

Discussion in '1936-Present Suburban' started by dbltapp, Oct 25, 2002.

  1. dbltapp

    dbltapp 1/2 ton status

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    Location:
    Maine, but moving again.
    What weight of oil would you rec for an 89 halfton with a TBI 350 that blows oil at start up, and is going to be in cold weather for the next 5 months? Just wanted everyones opinon. Thanx /forums/images/graemlins/ears.gif /forums/images/graemlins/burb.gif
     
  2. u2slow

    u2slow 1/2 ton status

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    I run 20W-50 in my TBI 350. You probably need valve seals if you blow blue on startup.
     
  3. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    my garage, Henderson, NV
    i run 10w40 in the summer and 10w30 in the winter in my 89 3/4ton sub. i live in vegas.
     
  4. chvyhs

    chvyhs 1/2 ton status

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    I run 30wt in my '90 with 190,000 miles, but I live in SoCal. /forums/images/graemlins/rolleyes.gif
     
  5. dbltapp

    dbltapp 1/2 ton status

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    Location:
    Maine, but moving again.
    i am going to try 5W-30. Yhea i know i need valve seals, i also need alot of rust repair /forums/images/graemlins/frown.gif ! I can't figure if it will be worth fixing, or if i should find another one? /forums/images/graemlins/confused.gif <font color="#666666"> </font color> <font color="green"> </font color>
     

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