Just saw this.. sorry for delay..
I have not noticed much. I havent been real consistent on fuel this summer. Havent been full yet, and spend most of my time around 1/2 full for what ever that may be
04OUTBACK, I have a quick question as I see you also have a 2011 21V. Have you noticed your gas needle to be inaccurate after about half a tank? What I mean by this is that after about half a tank the boat blows through the rest of the gas. If you have experienced this, what did you do to fix it, if not, then maybe I need to look into it a little more.