I have a 98 3500 dually auto 4x4 now with 205,000 miles that I bought out of Az in 2007 with the intention of keeping it for a very long time. It only tows to the races and doesn't have a spot of rust on it. I do long distance towing with it and don't like surprises so I've pretty much gone through the whole truck (except I haven't touched the engine)FASS, fancy trans and convertor, Pacbrake, new tires, brakes, hub and bearings etc etc... So last winter I came across an affordable diesel pusher motorhome and now I tow with that so the truck just sits here. I've tried to sell it and have it listed for the price of the parts I've put in it in the last year or two. And I'm not getting ANY bites. It's not hurting anything sitting here so I will just keep it.