My impreza outback is leaking engine oil when parked, I belive that in the last oil change the guys at the lube put some extra oil since it has lost a lot with the leak and still had level. Now I am begining to worry since the level is begining to drop and the leak persist. I know that the oil pan & seal are ok andd no leak from there. But I can't see were does the oil comes from since the oil drops on the front crossmember and I can't see further up thru it. Any Hint where can it be coming thru??