I just finished summerizing the last of the sleds today. This year with the problems with ethonal fuel, i wasn't sure about summerizing procedures. I concluded the best to do was to completely drain fuel tanks, run engines with full oil injection until engine died. I then completely drained all fuel bowls. All of the fuel was put into a drum which I can then run in my shop trucks. I have added a fuel tank with absolutly no ethanal added at my shop. Next fall all sleds will get a fresh fill up of 91 octane fuel. Does anyone have any recommedations concerning the fuel, this year?