Help with dd13 fuel economy

613157

{"text":"I have 5 dd13 in cascadias. 4 are day and and I is a small sleeper. My day and run here in Texas pulling dump trailers grossing 84k and are doing a little over 6mpg average. The one with a sleeper is running a flatbed on a dedicated haul about 230 miles one way and the same back. He grosses usually 76k or so and he's only averaging 5.5 mpg. They are all 410/1450 engines with ten speeds. Is there something going on with the one that's doing worse on fuel? They are all 2015 except the sleeper truck we bought used its a 2013","pics":"[]","canComment":true}