Thanks for the tip - and the original post which made things a whole lot easier. I'll creep round with my specimen bottle and see what I can find. In fact I've just heard from the suppliers of the grease that there is a specific Krytox solvent to deal with the problem - meths, white spirit etc, won't touch it apparently.
I went to my dealers today to pick up some rubber mats and asked about G 052 172 A1 - they didn't really know about it and definitely didn't have any.Which worries me for other local Eos owners who don't have this Forum to tell them what to look out for. I feel kinda shy about telling the service technicians their job, but I guess I'll get round to it when I know them better - not that I really want to know them too well. I don't mean to haunt their establishment. In France the official price is 41 euros (about $53).