Spock, thanks for the science behind my question. I knew alcohol was hydroscopic, was just thinking of a way to lower the water content. That's why in all the seasons except Summer I try to keep my fuel tanks as full as possible to prevent condensation in the tanks because it also gets into the gasline and causes hesitation by impeding the flow of actual gasoline to the engine <img src="/forums/images/graemlins/smirk.gif" alt="" />