E46Fanatics - View Single Post - Crankcase vent valve replacement
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Old 08-20-2019, 09:18 AM   #4
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Join Date: Jul 2008
Location: USA
Posts: 9,535
My Ride: 2018 M240i
The “cold climate” version is BS. The manufacturer merely wraps the CCV body with 2 pieces of foam insulation. All that does is make it longer for the CCV body to get up to temperature. Plus it’s a real PITA to install it.

To prevent the CCV from clogging up drive the car at highway+ speeds for at least 20 miles on a weekly basis. Btw, the engineer who designed the CCV had been fired by Audi before coming to BMW.
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