Vehicle is a 2010 Ford Taurus 3.5L. There's been puddles of oil under the car and I can't find the leak. The dealer couldn't find it either. The other day I was under the hood doing something and noticed oil inside the lip of the part pictured. Part is located on the valve cover closest to the front of the vehicle. Question I have is what is this sensor? Someone told me a valve cover pressure sensor and someone else said a variable camshaft timing solenoid. Does anyone know if there's a gasket for this sensor that could be compromised causing oil to leak from there?
Other than the sitting oil in the lip of the pictured part, there's really no other sign of leaking from way up top. There's oil residue all over the front of the engine (alternator, belt and pulleys).