Grey Spots On Underbody

[JDM34]

Hey guys, I was going through some pictures of a car and noticed these weird grey patches on the underbody, does anyone know what they might be? At first I thought it was rust repair but there's way too much of it for it to be cut out, repaired and welded... I mean it could be. What do you guys think? Here are some pictures:

http://imageshack.us/m/580/2233/203tz.jpg

http://imageshack.us/m/30/7345/204yv.jpg

http://imageshack.us/m/864/6320/191b.jpg

http://imageshack.us/m/822/3536/189kz.jpg

http://imageshack.us/m/850/5933/168mh.jpg

Cheers guys.

[GTR-N1]

Your assumption is probably correct due to...

* edges of the sprayed area being indistinct

* paint being in areas where snow would have been thrown up (along with the salt).

One just can't tell without a closer look and poking around as to which parts were surface rust and which were deep-seated

[JDM34]

Your assumption is probably correct due to...

* edges of the sprayed area being indistinct

* paint being in areas where snow would have been thrown up (along with the salt).

One just can't tell without a closer look and poking around as to which parts were surface rust and which were deep-seated

That's what I thought as well, but I've also been told it's a paint that is applied at the factory that acts as a sort of sound deadener, but you can't see it on most cars due to years of dirt etc that covers it up and such. I was even shown a picture of another car which is of the same year... or maybe a few years younger which had the same thing except it was a white paint as opposed to grey, and also had the same amount of underbody paint and the car is also from Tokyo. I was under the impression that it didn't snow there as much as in other parts of Japan. Could be wrong though.

Cheers.

[GTR-N1]

still looks like overspray to me