I just purchased a 2008 6.4 XL 250 Super cab 4x4 with 76,000 miles on her. It is my first Ford diesel truck. I was looking for an early Dodge or a 7.3 Ford 250 when I came on this truck. For 18 grand I took the leap and got her Saturday from the internet dealer. (first time I have done this) So far I have a sensor going off, tire sensor fault. turns out the company that put on the new tires damaged the censors and according to the Ford dealership $645 will fix the problem! The other fault is drain the water separator. After checking out this site I located the inline fuel filter BUT no lever to drain it. I guess someone broke it at some point. I also just got a check engine light today. In the morning both fuel filters get changed and I might as well do a oil and filter change as I have no maintenance records. I like to keep my stuff up to snuff so I might as well start with a clean slate. Thanks for all the posts here to help a newbe and any other suggestions I would be great.