That may be, but as I said, I'm on the conservative side. I figure, when I'm 800 miles from home, I REALLY don't want the towing vehicle to crap out on me for my own mistakes.My 5.7 will turn 4000+ RPM all day every day for a million miles with no complaints. Gas engines need to rev to make their power, especially when they're naturally aspirated.
As an industrial maintenance tech, (retired), I learned one very important fact.........if man can build it, it WILL break, and most likely when you're trying to use it. That's why I don't get onto carnival rides.
Just sayin'.....Roger