[MarkC]

I haven't tried it either, as I'm able to buy ESSO's (and BP on the Autobahn) Super-Plus (98RON?) fuel at about €.43 per liter via rationed pre-paid fuel coupons (in Germany only). With this, it's hard to Justify paying €1.19 per liter of 100RON. However, when I make another Alps trip and need fuel in a country other than Germany, or if I find my tank running low with no ESSO nearby, I just may give it a try.
MarkC