I have an Unkown Oil Leak:

I am not sure where it is coming from, or what oil it is:

It seems to be coming from the Back side of the Engine, It is mainly on the passenger side, but the oil is all over the passenger side frame near the wheel, also it is dripping of the cross brace under the engine and the transmission: It is also on the passenger side Manafold.

It seems to be Engine oil, but the engine does not seem to be down much oil, I am about 200 miles shy of my next oil change. The engine oil is at about 50% between Full and low on the Dip Stick.

The only other thing that may have any relevance: It seemed to start when I turned on my AC the other day for the first time this year: Though i have not used the AC since I started noticing the Leak.

Thanks for any help that anyone can give me, I am at a loss for what it might be.

Rogan.


EDIT:

I have a 2002 Impreza RS

rear cam o-ring...on the back of the head there is a plastic piece held in by two bolts, there is an o ring behind it, replace it and you are golden.