The 7.3l Internationals are bulletproof. They are older, but still highly sought after. I have a 2003, the last year they made them. They hold more value than the next generation 6.0's. Someone in an earlier post said they are older, and they are, but they are ultra-reliable, reasonably cost-efficient to maintain (compared to newer diesels), and if you're a shade-tree mechanic, you can fix just about anything on them due to the ton of information on them on the Internet. They really have a cult following. I have a landscape friend with several 7.3's, all over 600k miles and going strong. Lots of clean air and clean oil. Don't let the "older" tag mislead you. Lots of life in the 7.3's.