I forget my mixture from time to time so I test it out before putting it in the car. the first you will barely see a flame which is probably less then a 50/50 and the second one is a pretty big flame which is probably around 75/25
ive had this meth for almost a year now and its still very flammable
edit: yes i was bored
http://www.youtube.com/watch?v=_s0rlJc2hRw