I'm lookin' into buying a used 1997 Ford f250 or f350. These are my favorite trucks ever made. I like them way better than the new Fords. My dad used to own a two tone blue and white one with the extended cab and bed. That was the vehicle I learned to drive in. Very unfortunately he rolled it before it hit 100,000 miles. If it werent for that, it would be my truck now. Turbo diesel, 4x4, 5speed manual transmission is what I want. Now to the question. All of 'em that I see on ebay have 100000k plus. So how long should I expect these things to run before they start costing me thousands of dollars a year to maintain? I know the diesel engines will go for ever and ever but what about the rest of the vehicle? Thanks!