Hey Guys, I just tested my new engine pre-heater this morning and wanted to share.  I don't have the luxury of a hangar or electricity so I couldn't use the "normal" engine heating methods.  Luckily, here in South Carolina the need to pre-heat an engine doesn't happen all that much.  But when it does, I didn't have access to a good solution.  So I built my own.  My requirements where it had to be self-contained and able to function without having to be attached to any other service, lightwe