Last May I posted a question about the differential cover on my rear wheel
drive pontiac stationwagon.
I've since found out it was a drain plug and that the fill plug is on the s
ide where the drive shaft goes in.
I have had the differential fuild changed four snow, as the car is 28 years
young. I replaced the rear ujoint when I last changed the differential flu
id. The bearings are indeed "a work of art" when you see the seal removed o
n the drive shaft side. I have a picture of that here:
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