I noticed oil in the throttle body during alternator work. The oil is collecting where the throttle body mates to the intake plenum. Its not much oil...just a few drops and it's clean and free of carbon. The PCV tube is dry and the intake tube where it connects is also dry and free of any trace of oil. I cant figure out where the oil is coming from. The car has 52k and is very well maintained by myself. Aside from about 200 track miles and very occasional spirited street driving, its...

Oil in throttle body