Well, this started yesterday.
The car is a 2016 GC with 42k on the clock. An oil/filter change (Liqui Moly Molygen 5W40) was performed a few hundred miles ago, and a Spark Plug (NGK 97506 gapped to .20) change a few hundred before that. All was well until yesterday when moving slowly in traffic; nothing aggressive, just coasting along at 15mph.
I tried to capture the sound in this video hoping for some insight from the more well-versed of you on this engine.
You can hear me give some light throttle to see if the noise increases with the RPMs. It doesn't appear to, but I might be wrong.
Thanks in advance.