I have forgotten much lately (at 76) but rely heavily on a good friend that also has classic car shop. I had him do my annual oil/grease/fluids/etc check this week on my '63 Biscayne. He called me and told my the rear wheel seals were just starting to leak...to which I told him go ahead and change them. Paid for it yesterday and was kinda surprised that he also changed the rear wheel bearings... He told me it is pretty much necessary to do this.. I have no objection, just curious... Thanks much.