Anyone Towing an Airstream with a 3L GTDI EcoBoost Expey?

[ExpeditionAndy]

after several hundred miles with them spread out even further...cant tell any difference

We just got back from PA again and I don't hear anything. The truck is nice and quiet except for road noise from different road surface types.

 

[powerboatr]

i have noticed lately using 4 auto that i get a different whine from up front. if i select 4h for about 1/4 mile and then back to 4A it goes away.
i use 4A ALOT, our roads get slick as owl snot on rainy days