Originally Posted by GTEASER
That looks like it's just the valve cover gaskets venting a tiny amount of oil mist. Definitely not something to worry about, probably every car on the road has something that looks like that somewhere in the engine compartment. Just check every so often on the amount of oil that's there and you see that it grows, but very very slowly.
Also, don't forget that due to the boxer design of our Subie motors, the head gaskets are always swimming in oil and coolant compared to inline or V-X motors.