HEADACHEZ

I noticed over the weekend that my coolant seems to be leaking somewhere under the coolant container. Has anyone ever experinced this problem? I checked the hoses and everything seems to be conected properly. However after driving I noticed that there is coolant build up underneath the coolant container. Any ideas or fixes? I was thinking that maybe the coolant container itself has soom sort of small hole. Right now the car in 100+ degree weather runs in the middle of the temp. gauge, is that normal?

SloopJohnB@mac.com

possible leaks in coolant sensor or where the coolant sensor (on bottom of expansion tank) hooks up to the expansion tank.
possible cracked/crazed expansion tank (happend to my 00 4.2A6Q

One tip...don't reuse the stock audi spring clamps on your new expansion tank. Use small worm drive clamps.