i think the light coating of oil would be okay if your so good you know the motor will start soon. i never am. with an old fashioned oil can i squirted a couple of shots into the plug hole and turned it by hand before i put the plugs in. you low/no oilers who are afraid of plug fouling might be interested to know it started on the first turn. but if you build mass amt's of engines you've built more in a week than i have in my life. since the rings dont move against the piston groove, it doesnt need lube right? if it aint broke, dont fix it. i sure as hell would not even think about putting them in dry as a bone, that sounds like insanity. but i'll bet the rings break in quicker that way!!