If it was E85 (not being used in Phoenix but who knows) then I have read about dissolving parts and warnings for other bikes. Apparently ok for new cars, but does the same for the older ones.
Disclaimer; "While I may know a little about many things...I do not claim to know a lot about anything". (borrowed)
E-85 (85% ethanol fuel for vehicles labeled "Flex Fuel"), may well do extensive & rapid damage to a motorcycle.
Most of us have been using E-10 for years, in part, because E-0 is not available to us. The Ethanol Industry is large & powerful (think $; "Growth Energy Co.") and I certainly don't begrudge the farming industry (large or small), from turning a profit (that is a good thing).
However, E-15 & higher (ethanol content) is neither certified by E.P.A. nor approved by manufacturers for use in our motorcycles & even many late model autos.
I support the American Motorcyclist Association's "watchdog" efforts to protect us from any potential threats to our desired means of transportation/recreation, including unnecessary damage to our equipment.
The AMA recently revealed the lifting of an EPA ban on E-15 in summer months, (approved by D.C.), and there is a new promotion of E-15 as "Unleaded 88". This may deceive many into buying fuel based upon octane & price, rather than the higher ethanol content.
* if you can, check out May/19 AMA magazine's Guest Column (last page) by Luann Ford.
(not an ethanol story)
* just noted 12 stations selling E-85 in greater Phoenix area, found on afdc.energy.gov/stations, check their locations.