Here's the web site for E85 fuel.
www.e85fuel.com
I've read of people trying it in their Chevy Blazers and with straight E85 the check engine light would come on. The O2 sensor reported too much oxygen in the exhaust.
E85 has a higher octane. I believe it's like 105 so it shouldn't hurt Superchargers but from what I've read you'll get a lower MPG on all engines. One of the complaints in Utah has been E85 has been almost as expensive as regular gas.
Look in the manual under additives. In the H-3 manual it's on page 5-6.