[dburone]

Why could it be that also oil comes out from the valve cover breathers?
It only happens at WOT, but its to much oil, shouldnt it only be air?

 

[Crazy-Mart]

too much blow-by... youre compressing into the engine block. you might want to get an oil catch can.

 

[velardejose]

Yep
Theory
http://autospeed.com.au/cms/A_0338/article.html
And a diy project
http://www.turbophile.com/turbophile.html?technical/useful_information.html&1
In 'technical'

 

[dburone]

Shouldnt just air go out, and not oil?
MAybe so much air goes out that the splashing oil is taken with it.
I never seen smoke or too much air go out, because i guess it only happens at WOT, but after a WOT run i see lots of oil pouring out from the pipe atatched to the valve cover