Around freezing point again and bad throttle response from idling to clutch-in on the first mile. Luckily I took the modest E35 (1:2) and was not greedy for cheaper E48 (1:1).
After another mile next red trafic light and no problems.
Anyway less engine vibrations than with E10 (the Minarelli usually runs quite hard).
Edit: Sorry, I was greedy and filled with 3.1 litre E85 but the tank has only 9.x litre volume. So I'm running E35 now.
Numbers above corrected.