Re: '08 just bought, what "catch-up" maintenance is needed?
Note that if you live where they use any road salt at all, you will want to apply protection to the frame and suspension pieces to protect them before they start to rust.
Key focus areas: all of the welds, and any sharp corners because the black factory coating simply cannot protect welds, or sharp corners well, so they start rusting first. Also, inside of the frame rails.
Ideal treatment: apply to all of the black parts a topcoat paint + undercoating + wax + fluid film/boeshield, in that order.