how bad of a leak is this?

[orengutan]

so I was trying to track down an oil leak the other day in my 1.9td and noticed my coolant looked a bit low. I made a note to investigate when I had a bit more time, and the very next day my low coolant light came on.

so this is what I found:
http://i44.tinypic.com/2mmgtv7.jpg (sorry, rotate 90 degrees)

for a better angle, on another site: http://www.brainhotel.org/vanagon/engine_codes.png its the connector for the hose marked A (not my car, clearly).

loose clamp, or tragedy afoot? (this week I've already dealt with my clutch going, fuel leak, potential oil leak, and now coolant - ***ty ***ing week).

ideally, I'd like a quick diagram if anybody has one, of the coolant system, since I haven't actually looked at this on the td yet.

[orengutan]

okay, so having done a bit of research, what I'm looking at is the head cylinder coolant flange, and this is probably an o-ring or the flange itself warping (??) that needs to be changed.

[orengutan]

my next question is, can this in any way be related to an oil leak? O_o

[Turbinepowered]

It's probably your o-ring, yes. And no, that can't really be related to an oil leak.

[orengutan]

is it worth replacing the whole flange since I'm already doing this? they appear to be regarded as "common failure points" online, but it looks like a fairly solid part to me.

[Vincent Waldon]

Yup... they jus loves to warp... and they aren't much more expensive than the o-ring.  You'll need to partially drain the cooling system.. or move very fast.