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Thread: Oil weight

  1. 07-16-03, 08:43 PM #1
    darrellwest
    Guest

    Default Oil weight

    Hi Guys

    I would like to know what is the break in oil weight from
    the factory GM.
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  2. 07-16-03, 08:49 PM #2
    HTRK-1
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    Default

    I'm pretty sure all Lt1's came with Mobile 1 5W-30 as factory fill. If I was breaking in a new/rebuilt engine, I would use standard 5w-30. and drop it after about 500 miles.
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  3. 07-16-03, 10:14 PM #3
    vader86
    Member vader86's Avatar
    Join Date
    Sep 2001
    Location
    Baton Rouge/LSU
    Posts
    828
    Corvette(s)
    1986 White Coupe w all options.

    Default

    Mobil 1 5w30

    Although if youre breaking in a new engine, Id use regular oil for the initial break-in and then switch to Mobil 1.
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  4. 07-18-03, 03:48 AM #4
    oldace84
    Member oldace84's Avatar
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    Jan 2003
    Location
    Huntington Beach, CA
    Posts
    989
    Corvette(s)
    1984 Black

    Default

    My '84 vette has over 87k miles....I've used 20wt/50wt oil for the last 10 years in the summer.....
    I know......but it works for my vette...
    In winter use 10W/40W oil....
    So what do you think????????
    tony
    Keep The Shiny Side Up!!!!!!!
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