[turbo2.0]

They sell stuff to keep gasoline from forming varnish. I can't think of the name right now, but I use it in my Waverunners during the winter. The problem with most gasoline is that it is produced using a catalytic cracking process, where a large, heavy molecule is "broken" and reformed into a useful gasoline blend stock. (can you rell I've spent way too much time in a refinery)? After a while, the reformed molecule tends to revert through oxidation back to it's more stable configuration. The result is a waxy varnish, and a reduction in octane. In warm weather you can loose an octane point a week. This happens slower in cold. On a street engine it's probably not a big deal, but on a race car it is. Of course, I'm sure no one here lets old gas sit in a tank for very long. One other point, most water eliminators are alcohol based, some are mostly methanol. Some alcohols are bad for older rubber o-rings, and I have heard that some even attack magnesium. Just something to get the conversation going...