ORIGINAL: Deadeye
I do the same thing FLYBOY does...nothing. I've seen some guys pull the glow plug out, and flood the engine with ARO, then spin it to death with the starter. YIKES! Not only are they going to snap a crank sometime, but every time they dump in ARO, they are introducing contaminents into their engines.
Have they snapped a crank yet? Contaminents? Which would be what? If you taking about just exposing it to the outside air then I take it you have air cleaners on all your engines?