I tow a 26 foot, 6,500 lb.(actual) 7,700 lb GVWR travel trailer with my 06 F150 XLT 4x4 Super Crew and it does well. Expect 9-10 MPG towing. Towing with full tanks isn't a good thing unless you have to for dry camping. All that liquid sloshing around can greatly increase your trailer sway.