Bavarian, just wondering, was your CCV original? I just changed mine out this year to all cold weather parts including dipstick tube.

Last winter it made some high pitched whining in the cold until warmed up, so I knew it was on its last legs and preventatively did it this summer

I was not only surprised and impressed to see my valve marked 9/2003 (my build month) so my original system lasted 11 years. Impressive especially noting all the CCV failures posted on these boards.

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards