So if the shaft is correctly lubricated either from new or early on in life, will it fail or not? Has anyone found a failed shaft that was greased from new?
If slip joints on the drive shafts from the transfer case to the diffs survive many years when lubricated, why not the adaptor shaft splines if lubricated, or are the adaptor shaft joints that sloppy from new that wear is inevitable?
Any information gratefully received.

