A few months ago I had the dealer replace the OCV on a 2015 2.0L Skyactiv engine. It was weeping and not leaking that bad. Two weeks ago I noticed the one they replaced is now also leaking, only worse. I took it to the dealer and they gave me a 2015 Mazda 6 loaner car with 33,500 miles on it. I decided to pop the hood to see what the OCV looked like and found it was also leaking. See picture below.
All the dealer did was wipe off the oil and claim it was residual oil from the last job and that it's not leaking. (it's not residual oil and it is still leaking). My car has 55,800 miles on it. I know two other people that have 3's and their OCV's are also damp with oil. This is just a poor manufactured part. Few people probably even really look at it being they don't often take off the engine cover.
In hindsight, I would have left the original on knowing they all seem to be like this. The one they replaced it with is actually weeping worse. There is little I can do to make them fix it. I could fight them on it, but I'm not sure it's worth it and I'm skeptical of what other problems they may create. (they botched the valve cover gasket the first time). Could be a crankase vacuum issue but at this point I don't know.
All the dealer did was wipe off the oil and claim it was residual oil from the last job and that it's not leaking. (it's not residual oil and it is still leaking). My car has 55,800 miles on it. I know two other people that have 3's and their OCV's are also damp with oil. This is just a poor manufactured part. Few people probably even really look at it being they don't often take off the engine cover.
In hindsight, I would have left the original on knowing they all seem to be like this. The one they replaced it with is actually weeping worse. There is little I can do to make them fix it. I could fight them on it, but I'm not sure it's worth it and I'm skeptical of what other problems they may create. (they botched the valve cover gasket the first time). Could be a crankase vacuum issue but at this point I don't know.