I have an 05 lj with the 6 speed. I am getting ready to make a 2000 mile trip and wonder whats the mest rpm or speed to get the best gas milage. I know its a jeep but i have gotten it at 23mpg but i was past by everything even a hybrid at 62-63. I lookled at the forum but nothing and wondered if anyone perfected the optimum speed or rpm. I have 3.73 gears.