First vehicle I owned was a 1977 international scout with an international 304 V8 iirc and a torqueflite 727 automatic transmission. Dana 44 axles with 4.11 gearing as I recall. That truck got 15 mpg in almost all driving except if you were foolish enough to drive it at max speed for any distance. So I am kind of amazed that the fj60 gets worse gas mileage than the scout. Guessing that old V8/autontrans just offered better torque at a lower rpm than a 2f and 4 speed