I'd recommend against any stop-leak product of any kind. Generally, they are just band-aids that don't really solve any underlying problem. That stuff can clog up the heater core and cause more damage than they prevent...


Have a look at this thread, and see what a "liquid antileak" will do to your engine!...and then decide

The Build - A GT2871R build documentary

 

I got from Audi Prestige the screw $5 and they told me to roughly expect at least 2hrs work as it is very challenging to reach the screw area!
Right there I said thank you and went this morning to CB Garage an independant Audi specialist who replaced it in less than 10min, charged me NOTHING and told me to come see him for excellent service and prices!

Case closed and thanks for everyone's help!!!

 

I'm also leaking radiator fluid. I seen some pink around the rad so I replaced it myself but also noticed more in the back of the engine. Not sure if its just a washer its really hard to see back there. Its not leaking large amounts but would like to get that fixed. Any ideas fellas?