As we are all aware, Ethanol free fuel is disappearing faster than qualified politicians. In your learned opinions, is my 2010 Dyna better off with 90 octane Ethanol free or Sunoco 93 octane with Ethanol? I've used both and notice no appreciable difference in performance. I ride almost daily, year round so seperation shouldn't be a factor as the bike doesn't sit long. Thanks in advance.