As a side note, the 5.0 is a turd for towing, it has to scream (and is designed to do so) at 4k+ rpm to pull a load in the mountains. I actually traded in my 2012 5.0 F150 for a 2010 5.4 which was day and night better towing in the same circumstances and ran cooler transmission temps as well. I owned the 5.0 for 3 years and went through 3 different trailers in that time so I'm not just making this up.
I am surprisingly getting 1-2mpg better towing and unloaded with my ecoboost than the 5.4 (about the same as I got with the 5.0) and I drove both vehicles conservatively. The eco sure makes for a stress free pull though, after a minute or two of hearing your motor turning 4k rpm in 2nd gear (with the 5.0 motor, converter unlocked and building heat fast) it starts to get to you and despite its design, feels like it's going to explode. The 5.4 purred along at 3500-4k and was far more enjoyable. Just not as much as the eco.
I am surprisingly getting 1-2mpg better towing and unloaded with my ecoboost than the 5.4 (about the same as I got with the 5.0) and I drove both vehicles conservatively. The eco sure makes for a stress free pull though, after a minute or two of hearing your motor turning 4k rpm in 2nd gear (with the 5.0 motor, converter unlocked and building heat fast) it starts to get to you and despite its design, feels like it's going to explode. The 5.4 purred along at 3500-4k and was far more enjoyable. Just not as much as the eco.