So I am driving home tonight and all of the sudden I begin smelling oil? It isn't very strong so I am not sure if it is the car in front of me or not? Don't smell it the whole time but enough that I plan on checking it when I get home. Well when I arrive home I look and there is a huge puddle under my car and the bottom of the passenger side is covered. Haven't done anything recently to the oil system. Wondering if anyone knows where the oil pressure sending unit is? I was of the stick and no oil light came on so it was too dark to pin point the leak now but that is my first logical guess. Help please, not coming off the filter by the way.