Gas is produced for differant months and each month has it's own class. I happened to pick the worst gas of the year for my boiling temp tests. The lowest class is E with the lowest boiling point. But this is good for testing because I'm in the hottest area useing the lowest boiling point fuel which should provide the worst conditions. That is if class E is delivered in Florida. Go to
www.eps-hane.com/techtips5.html this shows the boiling points and months produced for the various classes. I need a few more hot days over 85 degrees to complete my tests in the 85 range would like to do more at 95 when it gets that hot. I have all the temperatures pined down on the various fuel components and the cures to reduce the heat in the critical areas. Will post the results after a few more tests. G.M.