You also want to look at the maintenance costs and availability of maintenance. Oil changes in the Diesel can run you several hundred dollars while the V-10 is around $40. In addition any where you go (think Alaska and NE Canada - I have done it twice) you can always get someone to work on a Ford and get parts. I have run the figures for me many times and I can't justify the diesel. That is not to say that it might be worth it to you.
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