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The problem that I see for the use of Autogas, at least in the Midwest, is that almost all of the gas gets here through the same pipe--including other petroleum products such as diesel fuel and heating oil.
One pipe all the way from Texas to Illinois means that the autogas is always contaminated with lower vapor pressure volatiles to some extent.
And, brand allegiance is a joke--it all goes from the pipe into huge storage tanks, from which it is shipped several thousand gallons at a time to every different brand gasoline station.
When I hear someone swear by one brand over another, I get a weird smile on my face. The only difference between gas supplied on most street corners here is probably the condition of the underground tanks and the level of water contamination in them.
Water contamination in Mogas is the big variable you should be talking about. When the big EPA effort was on to upgrade underground gas station tanks, it was not unusual to find 4-10 inches of water in the bottom of the tanks.
If you think you have carb icing using clean 100LL, just try some wet Mogas blend...
David Jones
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