Correct me if I am wrong....The oilite bushings are a tiny bunch of bronze and brass flakes with oil added to the mix...then the whole mix is pressed together with many tons of force to virtually make it one solid piece.....with the oil being impregnated right into the bushing itself. You can machine the oilite bushing without affecting the impregnated oil...but if you heat the oilite bushing you will burn out the oil.

Ordinary bronze or brass is almost always melted down and poured into a solid round or a cylindrical shape. They both have a natural affinity towards antifriction properties.....but not even close to what the oilite bushings have. But take plain bronze or brass...make a bushing...give a few thousands clearance....add a bit of grease or oil for lubrication and you have an excellant anti-wear surface.

Solid bronze or brass can take higher loads than the oilite bushings.

I could look it up...but bronze and brass are similar...just different amounts of aluminum, tin, copper...and whatever.