[kenny-1907]

I say if you can't see/feel anything . most likely nothing is there. I know of no rust proof type material that is put on the frames or under body from factory. They would not make any extra money that way, they already charge too damn much for them as it is never mind all the "extra options" that should be free considering the prices we pay. I know for a fact that my 2000 Ls 4x4 had nothing as for rust proofing or under coating on it when i purchased it used last year. And as for trapping pockets of air or water/salt or what ever , i say that is a load of crap . Any reputable place the applys undercoating to a vehicle washes the underside of the vehicle first then lets it sit to dry, at least that is what they do where i got mine done.