Yes, there are outliers, but it’s most certainly not the norm. When I said he could pull out 20-21, I was referring to highway mileage driving from RDU to the coast, so all flat and no traffic. DD duty was less, probably more like 17-18, but I’m not 100% sure. If [USER=2]@shawn[/USER] weren’t claiming 24mpg, I would have probably never even replied to your post, because your number was optimistic but within the realm of possible.
