Originally Posted by Bikeguy Joe
In honesty, I run 40:1 any more since all my other "goodies" run that mix.
I have recommended 24:1 in the past because I have had a couple of Big Name sellers ask me to refrain from suggesting anything but 16:1 or 20:1 for warranty reasons, so that is sort of a compromise.
So, for the record, run whatever you are comfortable running, and live with the concequences.
That pretty much sums up the situation and is best advice of all.
Personally I think 40:1 is fine and generates almost no smoke. 16:1 and 20:1 guys really bug me though because they leave those black areas in my driveway. Grrrr.... dam chinese instructions!