OK I posted this in the warbirds section because this is my main interest but if you hang your planes by the prop your putting stress on the front bering and fire wall first.

secondly when you are done flying for the day you should allways run the extra fuel out of your engne and use either after run oil or in my case at least WD-40 or 3in1 oil and store your plane nose down or flat like most of the posters have pointed out.

with the nose down attitude the oil is seeping into the bering race, really not that much because the bering is so tight that very little liquid could get through the seal anyway if it did you would have fuel spinning off your prop durring starting and durring flight.

any time you put stress on a bering no matter how little you are adding load to it,also to the mount, and airframe.

take notice all the owners of warbirds and nice pattern planes and have posted photos either have there planes in a cradle or horizontal on a shelf like structure or nose down, I would bet they oil there engines also.