Figured the costs of running a 2011 6.7 powerstroke versus a 2008 v10, both 3/4 ton 4x4 work trucks with tanks, compressors, lots of tools, and junk. V10 costs $40 more per 1000 miles. That's $8000 per 200000 miles. Diesel engine costs about 14000 more now I think. Of coarse you can't get v10 anymore except in f450 and f550. Numbers with the new little gas motor are probably even better.