Transmission oil

Discussion in '1947-1954' started by oldbluetruck, Nov 29, 2013.

  1. oldbluetruck

    oldbluetruck Member

    Joined:
    Feb 22, 2010
    Messages:
    58
    Location:
    SoCal
    In my 48 I have a 1954 sm420. I replaced the top with a 67 lid. Thank you Nate (my new friend). I would like to change the fluid and would like to know what is best? I thought gear oil was what to use.

    Thanks
     
    oldbluetruck, Nov 29, 2013
    #1
  2. Lakeroadster

    Lakeroadster Member

    Joined:
    Jan 23, 2011
    Messages:
    1,599
    Location:
    Central Colorado
    Gear Lube... yep!. GL-4 SAE 80W 90 (mineral petroleum based.. non-synthetic)
     
    Last edited: Nov 29, 2013
    Lakeroadster, Nov 29, 2013
    #2

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