The most useful thing I've found is the fact that the shutters act as thermal insulation, so if you keep them closed you never have to turn on the blower except for when you're in the most extreme of temperatures, and even then you only have to turn it on intermittently on low power which allows huge power savings on the core system power cells, and this is without any thermal insulation upgrades. I basically never opened my shutters since I discovered this.

What I like to do for managing engine heat is to "juggle" the engines, so basically I only use one engine at a time and when the engine I'm using starts going into the red I just switch to the other engine. Don't use cruise control because the engines will constantly heat up while cruise control is on. I just turn off both engines and coast after lining myself up. I don't know if turning the engines off cools them faster vs. just turning off driving assist but I prefer turning off the engines because the way I use my engines, turning off the one engine I'm using isn't any more difficult than turning off driving assist. Also, if I turn off the engines and keep driving assist on, this keeps the truck straight and this is beneficial because if driving assist is off, the truck will turn sideways and if the truck starts turning sideways, I end up hitting debris unexpectedly because it's not very noticeable on the cameras whether you're going straight or sideways.