Lt CHEG
Platinum Member
As far as I am concerned tow rating is determined by frame durability and axle rating. My Duramax might be rated to tow 16,000 pounds as it is but I'd have no problem pulling 26,000 or more pounds as long as the frame and axles could handle the weight. I'm in no rush when I'm towing heavy. If I can't reach the speed limit on the highway when I'm towing heavy, no big deal. I tow less than a third of the time that I drive my truck. I need the Diesel capability for when I do tow but I also want maximum fuel economy for those times when I'm not towing. Having said all of that I think that this 5 L Cummins V-8 diesel would be an excellent three-quarter ton and up truck motor, while I'd rather have something like the 3.0 V6 VM Motori diesel in a half ton truck.