My mother's '98 A6q has a slight oil leak coming from the filler cap on top/side of engine. It must be a bad seal or something. Just curious if any of you have had this problem with your 30V A4s. If so, please let me know what was wrong so I can point the service people in the right direction.<p>Thanks,<br>Kennon

Mine's tight in 5400 miles. Is probably a 30 cent rubber gasket in the filler cap.<p>Do you feel resistance when closing cap, or is it very easily closed (little/no resistance)? I am assuming you ahve twisted it about 1/3 cloesd till hit the stop.