^^ What Prowler said. My mailman retrieved his Schwinn LeTour from his mother’s house after sitting for 40 years. I overhauled it for him so he could ride it. The grease on ALL bearings was dried up to a thick , nasty , wax that I
cleaned and then greased with fresh grease. If he had ridden the bike I’m sure the races would have been ruined , the grease was no longer effective. It took me about a full day and I have all the right tools and a good stand, $250 would be a bargain. I didn’t charge him for it just because we are friends and it is a hobby for me.
This is what I found throughout the moving bearings!