What fuel do you run in your EcoBoost pickup? (not HO)

BarabooBob wrote:
I use 87 whether towing or not. I plan on being above 7000 ft a lot later this summer. I will continue to used 87 even at higher elevations.

That's good, becasue the higher altitude you run at, the less octane required in naturally aspirated engines, apples to apples.
And while your turbo engine won't get asphyxiated like a NA engine, it certainly is t getting more air, so you're good.