This is not, NOT, NOT scooter related. I'm not planning on putting this stuff into my scooter...
I've recently spent some time in Pennsylvania, and I notice whenever I go to Sheetz, they have a pump marked E15, with a warning not to put it into Pre 2001 vehicles.
Their regular gas is 87 octane, and up to 10% ethanol, which would make it E10. Unless you're using pure gas, most of us have been using this stuff in the USA for years now.
But E15 is new to me. It's not flex fuel... which is anything up to E85. But last time I filled up, I got a tank of E15, 88 octane. It's a few pennies cheaper than the E10.
My car is either a 2007 Honda Element or 2006 Toyota Camry, both with 130k+ miles on them.
The cars seem to run fine, no really big deal, but technically what is the advantage between E15 and E10? Other than the "uh, 5% more alcohol".