Any SN rated oil is fine for e85.
Don't listen to anyone not running it, as once you go to ethanol you will never go back. The torque gains are well worth it, even if you don't wind the timing in, or bump the boost up.
Your engine and exhaust will be cleaned of carbon deposits, your fuel system will be spotless, and the engine protected from detonation. If the only drawbacks are changing oil regularly and 25% less distance from the tank... I will let you make your own decision.
Anyone wanting to know information about e85 is welcome to PM me, I have been learning it's peculiarities, testing and tuning with it for over 5 years. I am more than capable of dispelling any myths people have been told.