ElGuyo

2003 Avalon xls 110 K Miles. Leaking light brown watery slippery fluid through the front cross member passenger side. Seems to happen after driving with ac on. Does not happen when ac not used. Unable to detect any leakage from water pump or radiator or hoses. Coolant resevoir has not gone down in level. Leakage is minimal on garage floor Seems to evaporate after several hours.