Should the pilot bushing be greased??

I used to always put a little grease on (and behind) the pilot bushing on my clutch jobs. Then I read about the oilite bushings and never did it again. BTW, all the times before where I greased them, I'd notice that my clutch discs would be a little greasy when I'd pull 'em apart later on........I figured it may have probably been that pilot bushing grease I applied doing a "centrifugal effect" when everything got hot.