concrete/cement or something on paint?

[Boss Hoss]

Once you wash it well you can try using a clay bar. The bar does a good job of removing most things off of the paint. You can pick a mother's clay bar up at Walmart or an automotive store.

NO WAY----Will scratch because the sand if it is concrete will scratch... No rubbing this stuff--or be VERY careful. It will eventually come off---worked around concrete pumps in my younger days. Diesel was usually sprayed on the pump so the "mud" would not stick..

 

[flash_e]

NO WAY----Will scratch because the sand if it is concrete will scratch... No rubbing this stuff--or be VERY careful. It will eventually come off---worked around concrete pumps in my younger days. Diesel was usually sprayed on the pump so the "mud" would not stick..

I was thinking that the clay bar might be used to roll over the area and it might pick up the concrete. You are right I would not have tried rubbing it with the clay bar. I am guessing the body shop used a type of solvent to break down the concreate and remove it.