I had a Dodge/Cummins 12 valve diesel 4WD 1 ton I pulled/hauled over 20,000#s from Dayton & normally it got 24mpg, of course I had to turn the OD off & still got just over 20mpg. We had the same truck at work with a gas V10 that never got over 7mpg empty or loaded. HP=fuel burn & Torque=pulling poweer or load moved & is why diesels always have low HP & high torque & the less any engine has to work hard the longer it last. https://www.cumminsforum.com/forum/texas...e-man.html A 12 valve Cummins has no computer but you can double the HP & Torque just by tuning as Dodge detuned them because the transmissions wouldn't take the power. Takes about half a day but spend the $500 to beef up the tranny before you do. It was in Diesel Power mag how to tune it step by step & cost nothing.
"If a law is unjust, a man is not only right to disobey it, he is obligated to do so." - Thomas Jefferson
![[-]](https://vandwellerforum.com/images/collapse.png)