Re: Summit E85?
You can used E85, or regular 87 and above. You also should be able to use anything in between. I think it recommends NOT mixing the two: 1/2 tank of E85 with 1/2 tank regular 87. During our Christmas trip, I saw E15, E20, E30, E85 at a Cenex station -- all stated they could be used in a Flex Fuel vehicle. I stuck with the Regular 87 (ethanol-free).
2011 Laredo X in White Gold: QT1, V6, Tow Package, Sunroof, Mopar Step Bars/Slush Mats, 20% Tint, Airaid Intake.