Likely the water pump or its plumbing.  First remove the oil filter for a better view, but you will probably need to remove the cooler as well.  There is just a nut holding it on.  Good time to replace its gasket too.  There is a weep hole in the nose of the pump, if the drip is coming from there replace it.

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of John Rodgers
Sent: Thursday, September 03, 2015 1:55 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Coolant Leak - 2.1L WBX

Engine cold. Sat overnight with a drip pan underneath  ( a precaution I routinely do) and this morning there was about a cup or so of orange coolant in the pan. Climbeed underneath with a light and could see a drip, drip, drip every minute or so off of the very bottom corner of the oil cooler. The cooler is mounted to the engine with one corner down, so naturally the coolant would drip from that corner. The cooler has been in that position for eons. Inspected the hoses to the cooler and they appear dry.

What else might be causing the coolant loss. What is above the cooler that might be leaking. I can't really see above the cooler without taking things apart, which I am lothe to do unless abolutely necessary.

Any suggestions will be appreciated.

John