and back to flyboy's saying
drain the oil out of your car and start it, you will damage the piston, sleeve and other parts the only reason they tell you to run the fuel out is so it dont gum up, if you are going to start them within the next week they won't do that, heck i let mine sit without running it out for months and it starts right up.
im not saying its bad to run the fuel out of the engine but if the shaft turns the piston is going to move if there is no lube inside its going to scratch something