Hi all! I have a 2009 Scion tc, started making some awful noises in the engine compartment....louder than usual. I was told not to drive it and check for any engine leaks....nothing significant enough to see any puddling, but an occasional sign of some oil around the area where you pour in oil...I took the valve cover off and the gasket seems to be in good shape. Any recommendations would be greatly appreciated. My son also stated that "it started making the noise while driving and then the squeaking noise the more i drove it"