Do not worry, this is not dangerous, unless water will freeze in the pipes from the tank to the engine. Then you will have to be tow to the warme area.
At the end of 60-ties we performed experiments with injecting watter into the carburators in order to decrease combution temperature and increase efficiency. Experiments indicates also that NOx emission was lowered. Those experiments leaded to invention of EGR.
Few engine design centers around the world had prototypes with additional water injection, but it was not convenient for every day car user. It has to be distilated water in order to avoid stone building. This would be a problems in the area where tempretaure goes below freezing point.
In order to lean up your tank, you can poor about 1 liter of denaturated alcohol per 20 liters gas (5% max) into the tank aybe twice and then replace fuel filter.
Friday, May 11th, 2007 AT 1:04 PM