E85? No, it would have a sticker on the window saying E85.
SDHQ spent $80k making a f150 eco boost into a "raptor", but no raptors come like this. E85 gets a few MPG worse than pump gas.
If I am way off with what flex fuel is I appologize.
Kinda sorta not really. SDHQ converted an "EcoBoost" F150 into a Raptor. An "EcoBoost" motor isn't a "FlexFuel" motor; EcoBoost is Ford's name of its turbo charged V6 that runs on gasoline, and it is NOT FlexFuel capable.
FlexFuel is Ford's marketing term for an engine that can run on gasoline or E85. As 'Dog said, the only Ford engine in a Raptor that is "FlexFuel" capable is the 5.4.
Edit: Also, you're right about the worse MPG with E85, but keep in mind too is (generally speaking) cheaper to buy so while you can't go as far on a tank, you won't spend as much to fill up. Also, E85 allows for a lot more compression (higher octane) which lets the PCM pull a whole bunch of timing, which in turn results in more power. So its (arguably) more fun to drive on E85 too.