I just read about the octane rating of diesel and am going to pass on mixing it or even trying. Sure, high flash point, but I am not willing to drop my octane rating that low, even in a very low compression engine like my Honda.
I think serious that I am just going to keep adding 2 stroke oil to keep it leaning out and then occasionally blast it with some water up the intake to decarbonize it.
Then when I figure a more sophisticated way to do an experiment, I'll give it a go.