C3 Synchromesh trans fluid no. 12345349 - NCRS Discussion Boards

C3 Synchromesh trans fluid no. 12345349

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  • mark34178

    C3 Synchromesh trans fluid no. 12345349

    Have been using 80-90 weight gear lube (GL-5) in the manual transmission of my 1980 corvette. Would GM part no. 12345349 Synchromesh transmission fluid
    be a better choice as it is designed specifically for transmissions?
    It is SAE 75 weight, so is a bit thinner though. Meets GL-3).
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43193

    #2
    Re: C3 Synchromesh trans fluid no. 12345349

    Mark-----

    No, GM #12345349 is not a proper or GM-approved lubricant for your application. Use GM #12345577 or GM #12345836 synthetic lubricant.
    In Appreciation of John Hinckley

    Comment

    • mark34178

      #3
      Thanks for the answer NM *NM*

      Comment

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