That is the reason round engine aircraft were hand proped before starting. Then if too much oil sealed past the rings on the bottom few cylinders while shut down, they could catch it, pull the plugs and drain the oil out until.it turned through 2 complete revolutions without hydraulic locking. Remember rings technology was not what we have today. That said, the oil clings to the surface and runs down over hours, past the ring gaps. It is only a drop here and there but adds up overnight.