[tfunk88]

Anyone know if even if you have the updated design PCV hoses if they still need to be replaced every “X” thousand miles or time-wise?

My 2016 N63TU has the updated hoses. I’m guessing they are original, not sure when BMW updated from the “ribbed” hoses that cracked. Anyway, I was replacing the o-rings on the end of the single hose that goes into the top of the valve cover. I wanted to see if the hoses were clogged up and tried to blow through it. I couldn’t. I can’t imagine the flaps inside the two valve sections are supposed to give a lot of resistance since they are supposed to vent crankcase pressure. Perhaps mine need to be replaced?