Hey all,
It's been awhile since I last posted. My wife's 07 maxima has a leak after oil change. No its not the filter and no I always make good and sure the old seal comes off with the filter. I also used new crush washer on the pan bolt. Its not leaking from these areas though. It coming from the oil filter area and seems to be worse when the car sits for a day or two. The engine oil is still reading full after 2000 miles and it started leaking when I did the oil change 2000 miles. It's the color of the engine oil and again oming from the left front of the engine. There is a black rubber tube right. BY the oil filter and its running down that. My machanic said that's not where it's Coming from. He is unable to find it. Any ideas will help.

 

Check the oil cooler ring.

 

Check the levels of all the fluids (power steering, engine oil, brake ...). If everything is normal ---> I bet it's the CVBoot right next to the oil filter ---> it can spill some nasty load of wet grease.
I had this happened on my 04Max and 07Murano, same exact side. On the murano -at first- I swear it was the oil-filter that leaked.

 

did you switch to synthetic oil?

 

did your mechanic actually look at it? if yes, and he said he can not find where it leaks, what makes you think that people here can answer your question??