I was looking underneath the car from a lift and saw a decent amount of oil on the passenger side of the block. close to where the head meets the block and 2-4 inches behind the timing cover. i recently did a valve cover gasket on that side and its a little damp with oil under the edge of the cover. but nothing obvious. Im not sure if the headgaskets are prone to leaking.. the car has 80k and is stock.