After weekend at the track, found spot of oil on the floor so I looked under the car and saw this (picture below). I couldn't really tell where it was coming from, so I cleaned things up a bit and ran the car until warm, but no further leaking (or it's up to high on the front of the engine and I can't see it with my car on the ground.) Thoughts?

Track was Summit Point, main circuit. Leak is front side, left cyl. bank. Leaking oil chain tensioner seal? Valve cover? Something more sinister? Dropping it at the shop tomorrow, just curious if someone will see the photo and know right away.

2000 C2, 73K miles for those who will ask. No mechanical overrevs. Have IMS Guardian installed which does not indicate metal in oil (yet....) Not a significant amount of oil loss either.

 

check the AOS up top

 

That's something that's been on my list to replace since I don't know the history of the car.

Could leak be a function of high cornering forces? I checked for vacuum leak which is often associated with AOS failure. I took off the oil filler cap and the idle dropped; put my hand over the opening and there was good suction.

 

AOS is towards front of car, this appears to be towards rear of car, front of engine, over the rear ARB. But then, oil travels so easily on the surface of a hot engine, with the air movement all over the place, really hard to tell. I'd still check the AOS, too though.