First tow of my camper

Used the camper for the first time the Labor day weekend. Towed it to Wildwood from my house, it's about 2 hrs away. My camper is a 32ft Keystone Laredo which weighs, loaded around 7500lbs. I'm using a Blue Ox weight distributing hitch, which keeps my truck and camper nice and level. Truck towed it with minimal effort (in 95* Florida heat, it was turning around 1900rpm at 65mph on I75, oil temp got up to 230* (I'll be putting synthetic in at the next oil change). I noticed some buffeting when semi's would pass. Truck is a 2013 5.7 Hemi with 3.55 gears.