Post by 78leader on Sept 25, 2016 18:28:46 GMT -5
I have talked to several people who own 1978 Corvettes and have found I am not the only one to get a chattering noise from the rear end. This past weekend I talked to a friend who bought a Corvette new in 77 and had the same problem when it was new. He said sometime in 77 they switched from a whale oil lubricant in the rear differential to some sort of synthetic lube. Apparently it does not do as good of a job getting in between the plate in the diff. He took his car into the shop and had the fluid switched to the earlier style and never has a problem again. Has anyone else had this problem or heard of a similar story? I am hopping to do some more research soon on the proper lubricant for this application.