Re night flying, I wouldn't invent anything that ridiculous. It's in the docs.
FYI, I did NOT state that Rotax legal says you "can't burn any 91E10 gas". As a matter of fact, the Rotax Service Instruction on suitable fluids says E10 is approved for the 912 engines. However there are plenty of good reasons to avoid ethanol. I didn't make that up, either. Take a look at this sometime
This article is based on tests of AGE-85, but the bottom line is: "Cessna’s recommends against the use of any levels of ethanol in fuels used in its aircraft, not only AGE-85." (my emphasis)
Flight Design also has published a Service Notification on ethanol. If you have to use ethanol contaminated fuel, you should be aware of the potential problems.
The "headlight" on my buddy's CT is a halogen incandescent floodlight, not an LED light.
I don't want to start a debate on ethanol. I'm just looking for info on the new Shell premium mogas.