I drive a 06 Chevy 2500 with the 8.1 gas engine and Allison trans for the last 7 years. I get 13 miles empty and no worse than 11 mpg towing no matter how heavy! I can tow with any diesel 3/4 ton out there without all the maintenance costs and high priced diesel. Also when I bought it I paid about 10K$ less for it than the same truck with a Diesel engine. Never had any issues, I just keep my oil changed and fluids and filters fresh.
Better look again. The 2019 Ram 2500 can tow up to 19 800 lb, the 3500 maxes out at 35 000lb. Unless I'm mistaken, I'm not sure any '06 truck, whether 2500 or 3500 could tow that much.
There is absolutely no rational argument to say any gasser (especially older ones) can pull and compete with modern 6.6 and 6.7l Turbo Diesels in the Big 3. These trucks are putting out 900-1000 pounds of torque - stock. On flat ground, you may think you keeping up - going over mountain passes out west is a whole different ball game.
The argument is if the cost/maintenance/need of a diesel compared to a gasser is relevant. I tow max 8500 TT 8-10 times a year - for me a 390 HP/400 Torque Tundra is all I need. For my Hunting Partner that is a Horse guy and will tow 6-8 pack animals and gear in a long gooseneck - a diesel was a no brainer no matter the extra costs.
