Gas in Toy Hauler Tank

IMO you can never get all the fuel out. And because of this. I use stabil and fill it up all the way. You would be worse off with the condensation build up then the fuel going bad. The little bit left will go bad very quickly and gum up the lines etc. I have bought many bikes that were drained and had far worse issues than bike that had fuel in them. I bought a Harley a few months back that was left with 1/2 tank from 07. The top of the tank was solid, flaking off rust and the bottom of the tank (that had fuel in it) was fine... So. After a trip put the recommended amount of stabil in, fill up the tank, drive it home, to mix it up, run the genie, until the stabil gets to the card, shut it down and forget about it. I would still run the geni every few months..
Works for me