Like Clay said they are not listed as compatable. You know where the label in the gas door says "Unleaded Fuel only"?
Vehicles that are E85 compatable have "Unleaded or ethanol fuels only" The E85 is cheaper but my wifes car FFV Taurus states that it gets less fuel milage on it, approx 6 mpg less. Take into account the price difference, you are not gaining much. Besides if the motor is not prepared for Ethanol, I would think it would suffer detonation (preignition, bad) The Misu knock system may not be able to retard the ign timing enough to prevent possible valve/ piston damage, but you never know.
Maybe some of the chemists around here can confirm or deny my assessment. <img src="/forums/images/graemlins/notooth.gif" alt="" />