Re: I might buy a used 2000 4x4. I have questions
You don't say where you're located, but if you're in the northeast or northern midwest, frame rust can be a serious problem. I'm in Maine, and it's rare to see a 2000 still on the road unless the frame has been replaced. I just bought a 2000 that came from California. I'll be treating the frame with WD-40, Fluid Film, and boiled linseed oil as soon as the weather warms up.