Need help, can anyone tell me where the salve cylinder is on a Audi A6 2.4 V6 on a 1996. The reason I want to know is I am losing brake fluid but can't find any leaks. When you push the clutch down for long periods of time in 1st gear i.e traffic lights the car suddenly starts moving forward. When you go to pull away the bitting point is very low. I have to put my foot under the clutch pedal to bring it back up. Has anyone else had this problem or does anyone have any ideas what could be causing this. Thanks for your time.