Posted for MikeEasley@aol.com:

If the oil can separate from the fuel at 40F, what about having fuel sitting
in the wings for extended periods? It would separate for sure here in
Colorado about 9 months out of the year.

Mike Easley
Colorado Springs

[It is my understanding that a 2-stroke oil / gasoline mixture is a solution, not a suspension, and that during combustion the gasoline component is flashed off first, followed shortly thereafter by the oil component.  Can separation occur with temperatures moving in the other direction?  I don't know, but I'm going to find out.  I removed a quart of pre-mixed (50:1) fuel from one of the tanks in my boat.  I added an additional 10cc of 2-stroke oil to up the ante a bit, mixed it well and stuck the bottle in my freezer, the internal temperature of which hovers around 10dF.  I'll let the bottle chill for several hours and report my findings at the end of the experiment.  It'll be interesting to see what happens.   <Marv>        ]