I'm using the absolute minimum in my opinion. 2004 1500 Silverado, 5.3L, 3:73 gear and airbags. Plenty of power and decent fuel mileage, but I don't tow over 65mph and would not at all if the trailer didnt have brakes as well. I worry more about stopping distance and constantly drive with my eyes focused far ahead. I sure miss my '97 dually.
