Black liquid draining out of burr oak trunk

Gilmer, TX(Zone 8b)

I have a burr oak tree that I planted 4 years ago. It is about 12 feet tall now. This spring, it has a foul smelling black liquid running down the side of the trunk. It is on the side of a very slight slope, in a well tended bed, and receives full sun. This tree is fully leafed out, looks healthy, and does not appear to be in distress otherwise. What is this? Is there something I can do?

Gilmer, TX(Zone 8b)

Here you can see the burr oak about 2 weeks ago, there is more of the black drainage, going further up the trunk. It has increased to a steady stream all the way down the tree. You will have to open the picture to see the tree trunk on the left side of the picture.

Thumbnail by MiniPonyFarmer
Burien, WA(Zone 7b)

Here are some possibilities.
Slime flux or Ramorum Blight
http://www.ehow.com/info_12154199_oozing-black-spots-base-oak.html

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