Incorrect, both Cruiser have the H55f 5 speed. The bearings in my HJ were growling pretty good though when I owned it, so I'm sure that was slowing the truck down and reducing fuel mileage.
Wow, you aren't getting proper mileage then. I have a 2H/H55f that gets 650km per tank and 2 x 2H/A440 that get 525km per tank.
Just thinking about it, the two autos also have a/c. What about your trucks?