The one thing the alcohol in the fuel does is draw and attract moisture. Back in my go-kart racing days, the guys that ran alcohol in their kart engines, always flushed their engines after the races by running them with a normal gas and oil mixture for several minutes to flush out all the alky. The carbs were jetted much richer, and this made it necessary to pinch off the fuel line every few seconds to keep from flooding the engine. after a few minutes, shut the fuel off, followed by the ignition a few seconds later so you knew the bearings were coated with oil. ATF makes a good after run oil also. It's thin, and clings to parts well. Motorman's method of combining with naptha and burping the engine with that mixture sounds like a good idea for the high dollar engines and would do the same as the procedure for flushing kart engines that I described.
Type at you later,
Dan McEntee