Should the pilot bushing be greased??

I believe bushing pilots are made with what is called "oilite" and you can Google that. However, my default source is ALWAYS the service manual. I would guess this is because at the time I bought my first (69 RR) Mopar, I didn't know all that much, and read the crap out of the factory manual. This of course was long before Al Gore invented the internet

Yea, you are right about the bushings having oil imbeded in the metal.
If possible I will always go for a needle bearing first, and then the oilite bronze if I can't get a needle bearing.