I respectfully disagree with mkirsch. The heat of operation and sun were in play, but the air had long before been fundamentally purged. The vapor pressure of fuel (todays and yesterdays inclusive) is such that the light fuel components, some of the main components of gasoline, isooctane, butane, ethanol are aromatic compounds, they will vaporize at room temperature. That is why gasoline will evaporate when placed in the open. In the winter, the temperature is low enough that only a few of them evaporate. Winter fuel is formulated with higher volitility Butane to make winter starting possible. Spring gasoline is a problem because it is quite often the winter grade and will fume excessively out the vent. It is wasted fuel in every way. Modern cars have pressure rated tanks and vapor recovery systems to avoid pollution (hydrocarbons) and wasted fuel. Jim
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Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
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