not an LSD ? Oil?

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  • isamemon
    Wrencher
    • Jan 2009
    • 257

    #1

    not an LSD ? Oil?

    so I looked at my tag, and i have a 427 990? ( could be a 7 or a Z) so I guess I have a standard and not a LSD ( I wwas told the LSD has it marked, LSD)
    so what oil should I be running in this
  • Rob
    Moderator
    • Oct 2003
    • 8166

    #2
    LS diffs will have a "S" before the numbers, so I guess you have an open (non-limited slip) 4.27? Is it an automatic?
    BEERTECH

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    • jlevie
      R3V OG
      • Nov 2006
      • 13530

      #3
      For an open differential use a plain 75w90. And for a limited slip differential use a 75w90 + friction modifiers.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

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