Diesel vs gas......................

dub, it is obvious you are the one who's filled with emotion. I've owned four Cummins Rams. I know what they pull like. The post was about wear due to rpm. Not about your emotional outbursts of how much your truck can tow through the mountains or fuel mileage at unsafe speeds. What argument? It's obvious you drive like you post. So dangerously insecure that anyone even cares about your fragile ego that you would be speeding through traffic to make sure no one passes you and you pass everyone. Odd that when we're on the road, even with my previous four Cummins powered Rams, we've not passed or been passed by too many to count. We don't even see too many to count. The interstates aren't glutted with RV's, much less on the occasional grade. Even less gas powered pickups with 5th wheels or large TT's. Which leads me to the conclusion that your emotions are leading you to make up stories. And that's not a slam, just an observation.
Mileage at 75mph, I don't know. That's insane to think you've towed that fast for several tanks in traffic passing everyone in order to come to a mileage conclusion that I don't believe anyhow. It's no surprise no one has passed you. I'd slow down and let the maniac get far ahead too whether I was towing or not. Also not a slam, just a simple fact.:B