I have a small oil leak coming that I see dripping from my AutomaticTransmission Transaxlecase as highlighted below (not my engine but rather only pic I have of a Neon transmission)The leak is Engine OIL not transmission fluid, what could be leaking engine oil from back of engine? I have to add a quart of oilevery 2 weeks and I thought it was my valve seals that were bad till I looked under my car and seen this slow drip.

 

could be4 possibilities.....head gasket, valve cover gasket, oil sending unit, or cam sensor