Tim, As I said, I have purchased several and have never seen that yet. I receive them in good, simi-shinny, raw aluminum condition (they were all made off shore). I understand what Eastwood said. If I ever get one like that I will send it back and either get my money back or have THEM clean it. When you start doing their work it leads them to believe it's OK to spray it with some crap that you have to remove, and have to call them because they never mentioned it and if you mess something up they will say no to warranty because you used the wrong stuff, did it wrong, were not careful, etched it, made it separate at some seam, etc. (some are epoxied, some all weld). My radiators "come out great" right out of the box. We have different outlooks as a customer. It's OK.
Deve, if you take it to the car wash, you will close up all the fins with the pressure. They bend if you just look at them. You would ruin it in 2 seconds.