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Old thread but I wanted to bring up something I've experienced in my 2015 3 with the 2.0 that now has 58k miles. June of last year the OCV on top left of engine was leaking. I had it replaced, twice, because the first time the dealer rushed the job and didn't properly seal the valve cover...

Yeah in the grand scheme of things I agree. I personally don't think there should be any leaks in an engine that is only 4 years old, but it's not the end of the world. I'm debating on whether to press them to fix it. I want to see how much it leaks.

Thanks for the feedback. So what is actually causing this? The odd thing is, the new one they put on I feel is leaking/weeping more than the original, but it was fine several weeks after they did it. It didn't start leaking again until 3 months after they replaced it. Crankcase vacuum issue...

Hi, old post but I'm having this same issue. 2015 3 with the 2.0. 55k miles. Dealer replaced it and it's still leaking. Took it back again and they said it wasn't leaking and it was residual oil (it's not). Not sure what to do. Oh, the 2015 6 loaner car they lent me is also weeping. I...