Briggs & Stratton Co. has never liked ethanol because it can make a mess of things at the worst possible time -- like when you need to cut the grass and your lawn mower spits, sputters and just won't start. Often, water in the gasoline is the culprit, according to Briggs, the world's largest manufacturer of small gasoline engines. And the company says the biofuel additive ethanol, which is contained in most of the gasoline people buy today, can attract moisture out of the air like steel sticks to a magnet. Moisture in gasoline is a big problem for boats,...