Your warranty is not restricted. I would press the issue with this Dodge by calling
1-800-465-2001(English) 1-800-387-9983(French)

 

Phone around and find a dealer with some experienced diesel techs first.
Don't get Chrysler customer service involved unless you have to.
If you have any type of aftermarket air intake or filter replace it with stock pieces before visiting the dealer.

 

What is this dusting process??