Just found this page whilst lookig about for info on cooling systems.. Interesting for the performance minded: Write up of 'Water Wetter' and cooling systems.
When i couldnt find a corrado rad i asked vw racing for advice and he reckoned i could use my standard 16v rad with water wetter in it. The guy said they use it in all their motors so it must be good
My mate races Motor Cross bikes and a freind of his is a top mechanic in the MX world.. he was having heating problems in winter when the mud was clogging up his rad. He was told to use it by this top mechanic freind and it's not overheated since... Just wanted to see some other views on it..