[slowmover]

Published shipping weight on my 2WD SRW truck was 6,860-lbs. Engine is 5.9L straight six at 305HP/555TQ. Four door Quadcab with manual transmission. 3.73 gears with limited slip on 163" wheelbase. Michelin LTX M/S tires lowest pressure per Dodge is 50-psi all around. Now at 55-psi [80-psi max]. Tow rating is 12k conventional.

The day I bought it I took it to the T/A truckstop near Sanger, TX to put it on the CAT Scale. With Leer topper, MOPAR bedliner, full fuel [35-gls], and 200# driver it was almost dead-on 7,400-lbs. Same condition but with tools and usual gear it is within 40-lbs at all corners at 7,940-lbs. Roughly 1k remaining cargo capacity (taken up by travel trailer tongue weight).

This is essentially an HPCR turbodiesel that is emissions-exempt (software is OEM; low NOX). The latest Dodge with DEF tuning is about the same on MPG (maybe not as high).

At 58-mph/1,725-rpm at above weight or near 9k maximum, MPG doesn't fall below 24-mpg on low altitude, level terrain. Highs of 27. The range in city is from about 17 (extended idling in high heat + traffic) to 25 (cool weather, no idling and greatest distance on freeway system in off hours).

It's important to note that my numbers are among the highest for this era. A 4WD with non-highway tires and automatic might see 20-mpg as highest. Most are 16-18 at 65-mph. Owners are generally not FE minded.

I offer as a comparison, and look forward to what the V8 can do in similar circumstances with a conscientious driver.

That last part is the least likely. MPG desire by most is to make no changes by the driver. Just a magic device or expensive drivetrain.

That said, I'd imagine someone will be able to give us a comp of 60-mph on cruise control on similar terrain and climate for over 100-miles.

Percentage changes for different conditions can be deduced if that test is forthcoming.

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