I'm buying a 1992 D250 this Friday. The thing is great. Other than a 3 in lift and a gauge or two it's stock. The 5.9 is in great shape and the 5 speed is great. Not a bit a slip from the clutch. There's 2 dents in the body and the gril is jacked up but I'm not worried about that. The drivetrain is good. 169xxx actual miles. My questions are what can I do to make this thing last forever and have decent miliage. That was my whole reason for buying diesel. Gobs of torque and the miliage of a honda. I'm sure there have been a million people ask this same question. I'm a generator mechanic in the Marine Corps but I don't know jack about miliage and what not. Thanks for all the words of advice and help.

 

tweaks to the injection pump, and fuel system upgrades are just a few off the bat to give you good mileage.

 

Thanks. What type of computer are in a 92?

 

if you're referring to the engines computer, theres really not one. the 12v's are basically all mechanical. only thing the computer does is control the alternator and gauges.