It's just a vent Bert.
Crankcase pressure should be zero (or close to it as possible) and all the pipe does is allow it to vent to prevent pressure building up.
The problem is, that what is vented is hot oil mist, so that has to go somewhere. In the old days, it would just spew somewhere, and nobody cared less, now folks earn a fortune "because they care" and they have to justify their living.
It could be 100k miles before Nick's catch can fills up, or, if his bores are a bit worn, it would just be less.
Nothing to worry about.
Crankcase pressure should be zero (or close to it as possible) and all the pipe does is allow it to vent to prevent pressure building up.
The problem is, that what is vented is hot oil mist, so that has to go somewhere. In the old days, it would just spew somewhere, and nobody cared less, now folks earn a fortune "because they care" and they have to justify their living.
It could be 100k miles before Nick's catch can fills up, or, if his bores are a bit worn, it would just be less.
Nothing to worry about.