I've got this old 91f250 (now 2nd owner) with 7.3idi nonturbo. Truck was used very little when I got it and only has 106,000 miles on it. Had to replace the flywheel and clutch asm. right away. It has 4.10 gears in it so has a lot of torque to play with. I removed the soup bown out of the aircleaner asm and bumped the injector timing a bit and other wise it uses NO oil and makes as good as 19.3 mpg at about 65 or under on a trip. It was really well taken care of by an older person before I got it with very little rust or dents either. Plan on keeping it a long time.

 

 

to DB!