Oil leak after track day..

[guzerone]

After a day at Pacific Raceways, I noticed an oil stain under the engine the next day and I feard the worst (RMS)

but it looks like the leak is some sort of bellows over the left cylinder head (see pic).

I assume that the 'thing' on the upper end of the ruber bellows is the AOS?

I had a bit too much oil in the engine (about 3 milimeter on the dip stick), the idea was to avoid

oil starvation in turn 2 (long left sweeper), could that have caused this?

There is no smoke but the idle is rough even after cleaning the TB and the ICV.

Should I replace just the bellows/tube or the whole AOS?

Gunter

99 C2 41K Miles

H&R Street Performance Coilovers

GT3 Sways + Powergrid links

[RFM]

I should replace the complete AOS if i was you, since your car is MY 99. Most part of AOS are already dead at that age.