Lippard's Perazzi book says just use 30 weight motor oil but Perazzi gives a tube of grease with a new gun. The bad news on grease is it collects grit and can be abrasive if gritty, which isn't a big deal if you frequently clean your gun which sadly many people do not do. I like 30 weight motor oil and a lube called tri flow that contains teflon. I clean my guns pretty thoroughly after each use (usually). Moral of the story....any lube is better than nothing.

Socialism is almost the worst.