I went out to check on the oil, everything good, but I notice the coolant resevoir is nearly empty. It was full not even a week ago. Not good.

<img src="http://pictureposter.audiworld.com/37457/im000033.jpg">

Everything looks dry, clean, no o-ring leaks... Oil dipstick looks fine, no foam on the oil cap either.

<img src="http://pictureposter.audiworld.com/37457/im000030.jpg">

Under the car I notice this:

<img src="http://pictureposter.audiworld.com/37457/im000025.jpg">

<img src="http://pictureposter.audiworld.com/37457/im000027.jpg">

<img src="http://pictureposter.audiworld.com/37457/im000028.jpg">

I'm thinking something is leaking from this location. One of the clamps or the bleeder. Any ideas?

<img src="http://pictureposter.audiworld.com/37457/im000032.jpg">

I can't tell if that coolant is dried up or what. It might be from when someone was burping the system through that blead screw. Either way, now that I think about it, i'm not sure the coolant would exit under the car there if it was leaking that bad. Maybe it's coming from another place behind the engine. We need more pics...

it leaks out in that area by the cats.

hard to tell where you have a leak.

and none of the hoses are leaking then it looks like you will be performing an R&amp;R on the heatercore soon;-(

<center><img src="http://www.mnsi.net/~natwhite/C4%20bleeder.jpg"></center><p>a leaky bleeder valve screw. Easy fix, but expensive! $65 for a small rubber hose.

Part # 4A1 819 373 F

Im sure you've never used that bleeder anyway.

You may be able to find one in a salvage yard or from someone on here. Either way, $65 is pretty darn expensive for this part.