I'm using the GL-1 90 weight mineral oil that the shop manual calls for. You can still get it at NAPA. They had it on the shelf in the back of the store though, not out front.
I tapped the input bearing onto the input shaft because it was a light interference fit. It didn't take much to put it on there, but maybe I warped the inner race. That's the only other thing that I can think of.
One of these days when the engine gives me cause to pull it for a rebuild, I guess I'll have to put in another input shaft bearing. Next time I'll heat the bearing and chill the shaft so it just drops on.
