:wall Well guys i go through this every winter. I bought a 2003 4r new. At the time I weighed the pros & cons of undercoating. I went with the cons - "a waste of time & $" plus the undercoating could in some cases advance the corrosion process. Now I'm afraid to drive in winter due to salt. I looked into having oil sprayed yearly i.e. KROWN. But I was told that oils sprays tend to corrode the rubber parts etc. Also mechanics don't like working on these vechicles. I don't like some undercoating processes that drill holes in the body. This is driving me crazy. Sorry this is long, but I need any advise you guys have out there. :xyxthumbs