Does every Cascadia have a poorly insulated doors?

I remember driving with a blanket over my left leg when I was OTR. Current Cascadia is drafty as well.

 

If its from a mega, they tend go skip on insulation. Pretty much all bare bones.

 

Yeah, that is the key. A truck can be ordered with some serious insulation packages and make things a lot more comfortable. Most fleets don't do that. My 2013 Columbia glider, I ordered every insulation package on the list. I can run down the road with only the cab heater on the 1 or 1.5 fan speed setting, and heat dial only up half way, and the sleeper heat turned off, even at 0F and be quite comfortable. Matter of fact, I have never turned the coolant valves on to the sleeper in this truck since I put it to work in September of 2012. No need. The cab heat does a pretty good job all by itself, and the Webasto bunk heater does pretty good even with the sleeper curtain still wide open. Only in the most extreme circumstances is it not quite up to the task.

 

The 12 I drove was cold like that but the 15 Evo isn't. They also changed the mirror housing design so there isn't a bunch of wind noise at the top of the door. The washer fluid won't splash right on the mirror anymore.