> diesel engines are basically thrown away Because they're "genuinely" absolutely broken, or "just" because of high aviation safety standards? That is, do they

> diesel engines are basically thrown away Because they're "genuinely" absolutely broken, or "just" because of high aviation safety standards? That is, do they really have to be "thrown away" -- or could you buy one, refurbish it, and run it in your light truck, accepting a slight risk of breaking down on the highway in exchange for getting the engine really cheap?