Fuel mileage question

Speed, load weight, cold ambient temperature, and wind speed are some of the big factors in MPGs.

 

I would be happy to get that. I average 4.7.

 

100,000 pounds? Then that's different. 6.4 and so forth is #### good.

 

I start doing a switch recently, 425 miles a day,my fuel cost is so high making me surpris,I would say 350L per day,I've got the Cummins 525HP,2011,
Where am I going wrong???

 

= 4.6 mpg (us gallons)
Dry van that's very low
Super B that's probably pretty good

 

80,000 LB,dry,4 excel

 

Too much low rpm lugging always in the boost will bring your mpg right down

 

If the tractor in your Avatar is the one you are pulling a van with then the height difference of your tractor roof and trailer is part of your problem. If you own the trailer a nose cone could solve that. Google tractor trailers with aerodynamic devices and effects of wind resistance on fuel economy and you can research numerous studies that have been tested. Some sites explain the different options on semi trucks and what percentage they play in fuel economy gains.