a "still is out of my range of know how. but it sounds like an interesting idea. a "still" is just a single stage distillation column is in not? If you could dial in the right heat/ size still it might work.
How much % gain would you think you could get from this? Some 91 octane gas brands are E10 free and might be a good first step comparison.
"nitrogenated" is just marketing. no real difference from everything i have read.
__________________
|