Well..........most people may not get that much.........I have a BIG v-6 in my F-150, and it WORKS really hard at higher speed.........Now, with a big v8 it might not work as much, but I KNOW that simple physics will show that 15 mph slower WILL make a difference..........TOWING or not.

I'd simply try to drive slower for 1 tank of gas and see the difference.......

Not only am I seeing 35 % towing, I'm also seeing about 15 -20% without towing.......I'm driving a LOT slower EVERYWHERE...........It makes a HUGE difference.

Later,

Geo