A little help
Can somebody tell me what the heck hose is this i've got confused is't the vacuum ,breather hose or neither i uploaded some pics so u can tell and it's located exactly beside the engine oil dipstick.
Also can u please tell me some tips how to replace it and what are the effects if i didn't replace it.
it's 1.8 Audi a4 B5.


Thanx in advance.
In that second pic: are you saying you need to replace the hose in that photo or you need to replace the hose that goes on that opening beside the dipstick?
I'm not sure what that is but it looks oil related - blow-by maybe?



