I am happy with my small penis. I do not need a big truck to verify that!
But your statement is absolutely incorrect. A lot of diesels burn cleaner and get just as good of mileage as a half ton pickup.
As long as you are cool with your wee dong!
The one I had didn't. It got maybe 1 MPG more than my F150. But the Diesel Fuel was about 60 cent more per gallon. Trade off fail. Don't get me wrong, I liked it but everything I was using it for I have been able to do with my F150. Most people hardly ever haul enough weight to warrant getting one, which is really a diesel's main functional advantage.