Hi,
Living in Darwin and having connections in Arnhem Land, I intend to travel there quite a lot, unfortunately, most of the time, the only fuel available is the "Low Aromatic" Opal fuel.
WIKI
It is rated 91 RON so it should be ok for the 912UL.
I tried as much as I could to find some information about the use of "Low Aromatic" Opal fuel in a Rotax 912 (UL) but unfortunately I could not find if using it will damage the engine or will impact on the performances of the engine.
I don't intend to use it all the time, only to fly while in Arnhem Land (4-8 hours) and to come back to Darwin (3 hours), once in Darwin I will use the Vortex 95 again.
Looking forward to hear your advice or to guide me to a website where they talk about it.
My apologies if this subject has already been covered.
Xavier