CantCampEnuf,
I would not put too much weight in the words of what Robert from Australia is saying about your truck as he has zero experience towing or driving with a 3.5L Ecoboost nor has any engineering background to make his assumptions. Your engine is just fine and as I said earlier that ALL turbocharged or forced induction engines regardless of size have to worry about EGTs. Also, diesels put A LOT more stress on engine through higher cylinder pressures of compression ignition and boost pressures from the much higher psi. However diesels are "overbuilt" in their design to handle these added stresses just like your Ecoboost is. Which is why it has 6 bolt mains where most other gas engines have 4 and steel cylinder liners where most others have iron sleeves just to name a few things that are "overbuilt" to handle what it was designed to handle.
As for Robert, he is just taking his aggression for me out in your thread and for that I am sorry. I will leave your thread so he does not ruin it any further. If have any other questions then feel free to PM me. Hope you have many great trips with your TV.