I always enjoy the, “a diesel will run 500k” comments. They very well may but 99 percent of people aren’t keeping the same pickup that long or aren’t driving that much. Another point is that gas or diesel, your average pickup is getting pretty well worn out at way less than 500k. Even on a pavement pounder the transmission, front and rear end, interior, rust on bodies and frames, all have to be taken into account even if the engine still runs like a sewing machine.