[bikestuff]

Update:  Initial estimate is $7880 to rebuild the differential, provided they don't find anything weird in there when they pull it apart.

I have asked them to take a hard look and to make an educated guess as to what happened to the diff to cause the oil to run out.   (There was little or no warning before the failure).

Also, Clarke Power sent me pics of what the coach looked  like once it got to their shop (see attachment).  Apparently the tow driver had grease on his shoes.