Just a small point on mixing fuels. I did some tests on my Alcohol stoves to see if adding Naptha would increase efficiency. The ratio I tested was 90% Meths with 10% lighter petrol.
The outcome was that this mix did decrease the boil times on all stoves tested by quite a bit! I was worried about any extra sooting of the pots used but this wasn't an issue.
Now I would never recommend using neat Petrol in a stove designed for Alcohol but my very modest tests have shown me if fast boil times are important then this fuel mix is better than Alcohol alone. Whether the faff of mixing it and the extra handling issues if there are any is worth the time saved due to a hotter flame will be up to the individual?
I did some vids on the tube on this subject, I think I called it my P10 super fuel or something if your interested?