After reading what was involved with replacing this seal, I was thinking, as you suggested, to let her go as is. Thinking, what would be the point of spending time and money on a seal when I'll probably be replacing the whole diff. anyways.
What signs would I look for that would indicate that the diff. is getting worse? Would it be a louder whinning sound or will something let go and I'll start hearing grinding sounds. Basicly I am asking, is this something that would lock up on me and leave me stranded. Also thank you for the advice, you have been a great source of info. for other problems I have had.
1994 MB E320 Coupe (199,500 mi)
1992 MB 190E 2.6 (173,000 mi)
1983 Porsche 911SC (148,000 mi)
2004 Volvo V70 2.5T (198,000 mi)
President of CT/Westchester Section