Oil Leak, please help identify sensor

Hello,

I have oil leaking from a sensor that I can't seem to identify. Sorry, I can't even get an angle to take a picture of it. It is not the oil temperature or oil pressure sensor.

It is located on the right side of the engine near the front and best described as below the area of the cam cover where the oil fill cap is, but down on the block. I looked through the FSM and can't find this sucker. What the heck is it?

Thanks in advance.