1. mjotrainbrain

    Mine started leaking after wheeling it really hard one time.  I'm guessing one of the many many times I high-centered that day I just messed up the seal by cramming dirt into it...anyways, had the front output seal replaced and it was good to go.

  2. Slartibartfast

    Open the fill plug and see if it's low. Topping it up is a little more challenging but easier than replacing the transfer case.