I fired up my car today and I noticed a faint squeaking noise coming from the engine bay. I have tried all day to try and find the problem and I have pinpointed where the noise is coming from.

I got underneath the car and it sounds like it is coming from the oil pan/flywheel cover area. It is a faint but noticable squeak and it really concerns me because of where it is coming from. It sounds a lot like a squeaky belt but all the belts are tightened to spec and the noise isn't coming from there. There doesn't seem to be a loss of power at all, just an annoying squeak. Does anyone know what could be the problem or how I could pinpoint the problem?