That elusive oil leak

[sasha055]

Hi,

I have an oil leak, it leaks in the middle of the engine. Every morning I see 2-3 drops of oil on my garage floor.

My first though was RMS and I acccepted that I'm gonna wait until the clutch change to fix it.

However I installed Pedro's technotorque2 this weekend and I noticed that the oil is coming from the top of the engine, there was a paddle of oil under the oil filler tube, just to the left of AOS.

The problem I have is I cann't figure out how to reproduce the problem. I wrapped oil filler tube with paper towel and run the engine through RPMs and it was dry..

I feel the smell of oil every time I redline the car while driving to work.. but in the garage no matter what I do I cann't see any oil.

How do I reproduce the oil leak from filler tube? is it happening only when the car under load? I cann't drive with paper towels on top of the engine..

My car is a 2000 boxster 2.7L with 76K miles. I changed AOS 8 month ago so it shouldn't be AOS.

Thanks
Sasha