I have a 35ft 2014 f53 chassis. I have never used the tow haul mode but once and didn't much like it. Do any of you run it all the time? How does it work going up hill? I tried it going down hill and ...
I use it a lot when travelling down a mountain or in stop and go traffic. The way you described it working is exactly how it's supposed to work. It utilizes the engine to brake you rather than heating up your brakes. In stop and go traffic, often I don't even need my brakes much. Love the feature.