If it says"oxygenated" it has ethanol in it whether it's listed like that on the pump or not.
Um, no. Short list of the most common Oxygenates:
* methyl tert-butyl ether (MTBE)
* tert-amyl methyl ether (TAME)
* diisopropyl ether (DIPE)
* ethyl tert-butyl ether (ETBE)
* tert-amyl alcohol (TAA)
* tert-butyl alcohol (TBA)
* ethanol
Actually you won't, not as a seperate liquid anyway.
Let a larger tank of it sit for a while. I helped a friend get a tractor going that was sitting for a few months inside his shed. It was running fine when he filled it up with 10% and parked it. There was about a half gallon of water in the bottom of the tank.