I haven't heard of anyone changing that oil just as a maintenance procedure. Now if you were rebuilding it or didn't like what was in there, that would be different. I think I drained mine by removing bolts on the adjustment cover but I am not sure.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!