Has the miles per gallon of diesel fuel diminished?

mercredi 3 septembre 2014

It has been about four years since I towed my 27 FB International with my 2008 Dodge/Cummins 6.7, but as I remember, at about 62 mph, I was achieving 14 mpg.



Now, with my new Serenity 30 RB, having pulled about 1500 miles on this trip, heading northwest, with some significant winds from the west and southwest, I am looking at from 10.5 to 12.5 mpg. Yikes!



I chatted with a fellow at a rest stop who was pulling an Airstream for the past 13 years and he stated the mpg he achieved has diminished in the past several years.



My question is this: For those who are pulling with diesel engines, has anyone else noticed a decrease in fuel mileage over the past few years?

Of course, the wind factor may be entirely to blame, and the fact I am 500 lbs heavier may be the problem. but I was curious about others experience.



I am head east in a week, then back south east so I will reassess the overall fuel mileage once the trip is complete. I was just disappointed to be pulling at about 62 - 64 mph and have what I consider to be poor fuel mileage.



Thanks for any thoughts on this issue.




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