[alanwoodieman]

Ole Ron is correct in that if left on the stand too long it will not be good on the rings, then again Vern Tardal says he runs his in on a test stand to check for leaks and to retorque the heads after a heat cycle, seem like both are somewhat correct--as an Engineman in the Navy, I used to get in trouble because I would not crank up the diesels and run them for hours waiting for departure, that just carboned up the 71 series GM engines, would warm them up, check out and shut down-used to drive the Captain crazy!!