please let us know what you find. i don't think fuchs is available here, but i'm sure there are others producing similar products. i'm currently using glycol based coolant and haven't seen anything alarming but i'm always curious about things like this. i know of another lancia owner using the evans coolant that reports good performance, although slightly higher running temps.
The technically savvy shop owner who installed the Fuchs coolant conducted his own research after I raised my concern about OAT with him, and concluded that it should be replaced with "green conventional coolant". I use this in all of my other older collector cars on a three year replacement cycle, so I'm happy to do so.