From what I read, the 6.7 and 5.7 powered 2500s get nearly identical mpgs. Difference? About 260 ft lbs of torque... if you can pay for it lol.
As for the 3.0L diesel we are discussing: I read an article on it in Diesel Power Mag and its a tride and true BRUTE of an engine! They built this engine to last a lifetime, no doubt. Its impossible to turn a bearing, and instead of main caps, its got a whole solid piece that bolts onto the bottom end of this thing with massive bolts. Its strong as hael! Now Im thinkin about researching buying one
No Airstream Yet...