I have an 8000lb GVWR trailer. I had a 2009 Expy Limited with the tow package. Towing the trailer could best be described as scary. At the scales, with no cargo, I was within 50lbs of the Expys GVWR. I traded the expy for a 2013 GMC Sierra 2500 with the Duramax and I couldn’t be happier. We did a trip to Yellowstone this spring, and I put on 3000miles, mostly towing. The final leg of the trip it was 102°F with 28mph winds, and my transmission temp never got hotter than 185°F. The truck was more stable in those conditions than the Expy was at 55mph with no wind and a flat road. The Expedition is a nice vehicle, but it is not appropriate for towing large trailers based solely on the max tow ratings. I challenge any of you towing large travel trailers to post your Cat Scale readings with numbers that aren’t exceeding your vehicles weight capacities. I’m not looking for an argument. This is my actual experience with this and buying a trailer “the Expedition should be able to tow”. I went down this road and made mistakes. Don’t overestimate the abilities of a tow vehicle. It will catch up to you eventually.