I had to go around and ask each store if they had ethanol, out of 10 stores only 2 did not sell ethanol, they said they will never sell ethanol, it is put in when they deliver it, It will cost alittle more( around here it is about 10 cent more per gallon) but it is worth it to me to know I am not putting ethanol in my NEW BOAT. It holds 40 gal.s, Hard to run that much out in 90 days. The ethanol will separate after that. If you leave it half empty, then you will have condensation in tank which leads to more water in tank. I do have a water separator/ filter on the boat.