Noise coming from transmission

Discussion in 'Softail Models' started by 400ex77, May 26, 2010.

  1. 400ex77

    400ex77 New Member

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    I have a '99 Softail custom 80ci. I read on this site from multiple posts that people are running mobile 1 75w-90 synthetic gear oil in their trannys so I decided to give it a try. They were all right about how smooth it shifts, but now I'm hearing a noise that sounds like a bad bearing coming from the tranny. It doesn't do it at idle, only when I rev it up. Any ideas as to what I'm hearing and why?
     
  2. BUBBIE

    BUBBIE Well-Known Member

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    Do a few more test and report back....
    You say "It doesn't do it at idle, only when I rev it up."

    Is that IN gear or neutral?

    Try putting into gear with clutch "in", REV it, does it make noise then?

    A little more is needed to TRY to diagnose....

    signed....BUBBIE
     
  3. 400ex77

    400ex77 New Member

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    It does it in gear and in neutral.

    My plan was to switch back to the 20w-50, but I don't see any reason why that should make a difference.
     
  4. glider

    glider Veteran Member

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    The 20/50 is for motors not transmissions. Run a gear oil in the trans.