I also have an oil leak that I can't seam to pin point were it is coming from. I've been reading some of the forums and besides the obvious valve covers and oil pan. This is what I cam up with Oil Pressure Sending Unit, Camshaft Position Sensor, Crank Shaft Seal, and Front Main Seal. All are very inexpensive but how much labor is involved in replacing them?

 

Go to O'Reilly and get both seals ( front cam seal and rear) for $10 and save the front seal because u will need it soon. The front seal means removing timing belt and cam sprocket and tensioner and back timing cover.

 

Rear crank seal aka rear main seal. Removal of tranny to replace seal. Expensive. Front crank seal remove harmonic balancer and timing belt and crank sprocket. Easier then front cam seal. Both at least 400 bones in labor. Be confident and get good tools and do what I've Benn doing. Learn about your neon.