Hi guys - new to the forum - interestingly I had the same problem with my 2.2 litre Camry after a service from one of the cheapo guys, but was leaking from the distributor. I added a litre of penrite 10W60 oil I had in the garage and the leak stopped! I would say in my case at least crap oil! I've now changed the oil to penrite and have no problems with that leak anymore!