Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
There is a oil cooler o-ring behind the oil filter. This o-ring through time can leak and that would be up front like you are explaining.
This o-ring is around 22 bucks, and is normally done with 1 hour labor and a oil change.
Other than that, I do know this also, the dipstick goes into the cylinder head. If the rubber seal on the dipstick has any parts missing it can leak oil out of the dipstick tube which is really the cylinder head.
The last is the valve cover. These 3 things are the only things I would say are the most common for oil leaks.
Do you have any more questions on this?