shep67

I was reading one of your posts dated June 2013 where it stated: "In my view, diesel engines and fuel efficiency follow a simple formula: Run the engine as close to its torque peak, and you'll realize the best fuel efficiency." I own a 2006 Dodge Ram 3500 short bed that I ordered from the dealer. In the brochure it showes the torque peak at 1600 RPM. Am I right in assuming that is the most efficient RPM for fuel mileage regardless of speed or load or gearing? Thanks Shep67.