I have a 1999 Chrysler 300m 3.5 that is leaking oil. There is no obvious source from the engine, though it is possible. The car overheated last year and I had the dealer replace water pump and timing belt. It was still overheating and they had to do something to the lines on top of the engine. (I live in Europe and it is not clear exactly in the translation what has been done, but it did not involve taking off the head.) Anyway, the overheating problem was solved and it's been almost a year since that happened. So the strange thing with this leak is that the oil is primarily being seen in the area between the air compressor and the battery. There is actually oil on top of the compressor. Now this is right under the dipstick, and near the oil fill, but both of those appear solid. I was thinking it might be possible that oil is leaking from somewhere else onto the compressor belt and it is flinging it toward the battery as it goes around the pulley, but the belt doesn't appear to have any noticeable oil on it or the pulley. Does anyone have any idea what could cause the oil to appear in this area. Some of it is dripping on the exhaust, and I'm worried about eventual fire, so I'm having a mechanic look at it (local Chrysler dealer has closed), and would like to be armed with information if necessary. If it were the head or a gasket, would it not be overheating, and pasty oil (oil appears clear). Exhaust also appears normal. Any thoughts are appreciated.