phat,

I'm basing my remarks on the results I describe in this post: Is Ethanol Worth It?

I found I could boil in field conditions with only 18ml of high ethanol content fuel (Klean Strip Green Denatured) where as it took me 24ml of methanol (yellow HEET).

I've seen tests done in labs where the results where much closer, but in my tests, which I repeated numerous times, there was a 6ml difference per 500ml boiled.

YMMV (Your Methanol May Vary)

HJ