Re: Dana 300 question
If you are talking about those little round buttons that are about 1/4" in dia., don't drive without them. I would suggest putting a glob
of silicon in there if nothing else. When I did my t-case Jaffer had some small silver discs in case I needed them, he's a jeweler, so
maybe you can get something from a jewelers supply. I don't know about loosing oil, but dirt getting in there is the problem.
Brad (from the 4 Wheeling center of the universe, 4 corners USA)