Ford calls for 5W-30 in the truck/MGT version of the Coyote V8, but 5W-50 in the Track Pack of the MGT.
I’d run a stout 5W-30 Euro oil(Castrol Edge/PP Euro or M1 ESP) with a NOACK of 3.5 or a 5W-40 API CK-4 HDEO like Rotella T6 or even a mineral 10W-30 like T5. Any dexos2 oil would be a good candidate too. You have a truck, if you cared about MPG, you’d buy a Prius/Fit/Fiesta/Rio or a Tesla. **** CAFE - you’re operating your truck under hard conditions.