Thanks for the info. Devocamper, you make me a bit nervous with the mention of steep hills. Just had the head gaskets and studs done in my 6.0 last summer, as it was heating up towing on inclines. It's been running great since, but steepest hills I towed the TT since was up to Lake George, and up into Maine. I guess I am gun shy and keep my eye on the gauge constantly now. Heated up my brakes real bad years back on a Class C coming down the Smokey Mtns, and learned quickly why they named them that! Smoke coming out of passenger side front wheel, had to pull over for an hour to let it cool down. People actually stopped to help, which was nice, even though one guy suggested pouring cold water on it to cool it off faster.:E