What kind of millage are you guys seeing when towing heavy loads like a camper?
Looking at get a 30 foot camper

 

I have a 23 foot travel trailer, approximately 5000 lb. I got 12.8 MPG for the 500 mile Dorango break-in tow. 2013 V6, break-in requires under 50 MPH for first 500 miles of towing. Dorango had already 4000 miles on vehicle. This tow was esentially on flat roads.

I wouldn't be surprised that a 30 foot trailer would exceed towing weight limit of Hemi.

Ray

 

I have a 22ft travel trailer (maybe 4500lbs loaded) and averaged 11mpg (Hemi) from Sacramento, CA to Seattle, WA and back at thanksgiving. Our only significant trip so far. The terrain at the CA/Oregon border was quite mountainous and we had a lot of wind and rain.

 

I get an average of 12 pulling my 5,000 lb Airstream.