The 03 S6 has been parked in the garage for few days, I have noticed a puddle of colorless/odorless liquid which smells and feels like water has been collected under the left front fender just ahead of the front tire on the garage floor. I dried up the puddle and take note of all fluid levels. Again I found a sizeable puddle is forming this morning. All fluid levels (brake, washer, coolant etc.) remain unchanged. What would this mystery fluid be? Everywhere else including the car is bone dry.