Just bought a new 26 foot RV trailer Grand Design 2600RB that can weigh up to 7800 lbs. fully loaded. It weighs 6300 lbs. empty and my current 2012 F150 with 5 liter struggled to keep a constant 100 kmh on the highway while I brought it home. So now I'm looking at a new 2021 F150 with the 3.5 Ecoboost with Max Towing package? Debating if its wiser to get F250 with 6.2 that will easily tow 8000 lbs (not interested in a diesel). Anybody here have experience towing RV trailer with F150?