Doug, I have the same motor, but in a 2017 version! Does yours have power trim and tilt? It was not available in the 40 HP in 2017, but I see it is on the new ones. The dealer I bought my boat and motor from (Chuck Howell , Howell marine in Chatham) was the one that told me to not use premium fuel. It had something to do with the spark timing and that 87 octane (regular fuel) was all I should ever use. You cannot just disconnect the fuel line and run this motor dry like I would with any other small engine. The fuel pump will make a heck of a racket if you do! I pull the filter bowl on mine every fall and dump out the gas. The good thing is these motors are fuel injected and do not have carbs. In my opinion, they are more tolerant of the ethanol. I would suggest that you run a good stabilizer in your last tank of the season, and then dump any remaining fuel left over from your boat tank into your vehicle tank.