ORIGINAL: chopper man
Well let me ask this question. Why not just leave the fuel in the tank? I have always emptied my tanks at the end of the day. some guys just run the engine dry. Typically there isn't a whole lot of fuel left in the tank so why not leave it until the next time you fly?
chopper
The fuel can absorb lots of moisture, go bad, run out everywhere. I don't want the fuel running out into the carb, engine, or muffler when I am transporting it or carrying it. I have to turn my extra upside down to take the wing off like many do with low wing planes, and the fuel will pour into the muffler if the angle is right. Then it comes out of the muffler and gets on who knows what. It just makes things easier to clean and work with when the tank is empty.