cheeseraid

Ok the benz is wanting a part again but this time I can't find the leak without taking a bunch of **** out of the way lol. Anyways I keep finding oil on the oil pan coming down by the alternator. The timing cover isn't leaking nor is the head but I keep finding oil. I can't see up there by smog pump and alternator. What else could leak on the front left hand side? You think it's the front cover leaking? My benz is a 91 sportline 2.6 auto. Any ideas would be great since I'm about to change the oil. At the price of 6 bucks a quart I can't afford to loose a dime . The rear man seal leaks a bit but barely. Otherwise that I don't loose oil.