Ford Super Duty 6.2 Super Ike Gauntlet Pull

I have a 2011 F250 with a 6.2 and less than 50k miles on it. It's a very capable truck for the 10,000 GVWR 5th wheel that I have but if I had a trailer that was heavier I'd probably go with a diesel even if my truck would pull it. I don't like to hear an engine scream even if I know it's not hurting it.