Re: will it burn...
We are speaking fairly hypothetically. Indeed it goes without saying....run a high lubricity pre-mix when messing around....at your own risk of course. When I used to run toluene or xylene/alcohol mix in my turbo car even then I would add some 2-stroke oil in my 4-stroke car! Simply as a UCL. Worked great.
If down the road I put any forbidden substance in my premix, it probably will be toluene or xylene as a octane booster. Just for fun.