If you change the oil in a diesel every 5000 miles and the fuel filter about the same it should last damn near forever. My buddies old farm truck is an old Ford w/ the 6.9L I believe, and it has 396000 miles on it. It doesn't even miss a beat. Doesn't burn oil or anything.

If you run propane injection and a bigger turbo, chip, exhaust, injectors, and all the other killer stuff, you can expect more than you think. If you don't hammer down everywhere you go.

Diesels will run forever it you maintain them. If you like to hear the turbo spool all the time then they won't run that long. Okay, what I meant to say was if your throttle happy and you keep your foot 6" from the front bumper when you drive, it won't last very long.

Not in a regular pick up anyway. Now, with a Semi, we have a totally different story. In the military, you should be able to piss in a can of water and put it in an old Detroit Diesel and make it run. Now, tell me that doesn't just kick major ass.

I'd love to see a CAT or a Detroit in a Regular size pickup.