I had read an article about ford's f150 eco-engine getting only 10 mpg while towing a trailer. My 2009 suburban gets approx. 13 mpg while towing my boat. I have traveled with a friend who drives a ram with the hemi and we got about 16 miles mpg while towing his boat(exactly like my boat.)

is there pickup or suv that gets better mpg than the ram with the hemi engine while towing a boat ? I have no interest in a truck with a diesel engine.