I'm noticing a noise lately that sounds like a socket wrench spinning (but a lot louder). That's the best way I can explain it. It seems to be coming from the lower section of the engine, near the oil pan. I don't notice any abnormal readings on the dash, so all seems ok now. Could this be the oil pump or something? Is this a normal noise that for some reason I'm just picking up on now? Thanks! Tyler #3472