I changed the o rings from the oil cooler because a little oil was leaking. It seemed to be a successful job. But when i park my car at work, i back in making my nose lower but not much of a hill, i seem to leak about a 3/4 cup of oil. Im not sure what' sgoing on, i checked under the car and could'nt find anything leaking. I know it sounds like a stupid question but maybe someone has had this problem, if so hit me with a possible answer please.