1320Fastback wrote:
Since you're double the rated specification for the truck I would definitely take it easy on the highway. The sail area of the trailer is like a giant parachute and can easily overheat your transmission.
One drive through the farm lands will show you how much the truck blocks and how much it doesnt by the dead bug pattern.
Another area of drag is the square back of the trailer. Big rigs nowadays run air doors on the back to help alleviate the vacuum and they wouldn't spend the money on it unless it helped.
Totally off topic, but that is a nice lookin' truck you got there in your sig.