The comanche has the inline 6 4.0L motor. It's a 1992 with 223,000 miles. I have no problems at all climbing any hill/mountains (just kept it in 3rd the entire 3300 miles . . . not in overdrive). Stopping is another story, but this trailer has working brakes, so it's much better than the red seafari's dually trailer that the truck came cross country with . . .
