i use the cheap .99 cent bearings in my losi truggy with losi clutch setup, i dont do anything to them, just throw them in and race, have never noticed any slippage, a bearing will usally last me 4 racedays, 3 quilifers and a main each race day, (not A-MAIN) lol... the greese the factory adds to the bearing is pretty much for shelf life and isnt enough to worry about at all, very very little is used, i feel when you "blow the greese out" and add a couple drops of bearing lube, pretty much just doing what factory did for you and is a waste of time. just my opinion guys, everybody has one!