Hello All, I just took an extended test drive over the weekend of a limited ecodiesel. I have driven one previously, and did not notice, but this one had a pronounced drone at idle heard through the cabin. Currently I have a 11 laredo X hemi, and it is much quieter at idle, but the 14 is more quiet any other time.
Is this something that fades with time?
Should it be there at all?
Also, the burning off of engine coatings is quite bad, how long does it take for this to disappear?
Thanks for your help!