AU hates Optimax
Whenever I run optimax in my AU it has trouble starting in the morning. It shakes and stalls when starting, then on my second attempt, it starts fine. Also when idleing it shakes a bit.
I haven't tryed running any other 98RON fuel in it, but i've run normal Mobil Premium (95RON) and standard Mobil Unleaded without any probs.
Optimax has one advantage - it seems to use less fuel when running it.
Anyone got any ideas?