I was actually wondering if anyone had any good recommendations for undercoating treatments...my 92 4runner rusted out pretty quickly in the NE winters, I'd rather do anything I can to avoid the same fate on my X. On my old 76 CJ I used roofing tar in some key spots and it's worked amazingly well....don't think I really want the bottom of my new X covered in the stuff, though. Anyone try any products that have worked well in the past?