Forum Discussion
mr176
Mar 22, 2018Explorer
Speed, grade and wind play such a big part. I have a 2017 F350 DRW w/ 3.55 gears pulling a Mobile Suites 38RSSA (probably 18k-19K lbs). On a recent trip from Michigan to Texas and back, I had tanks ranging from 7.9 to 9.5 mpg. I tend to run the posted speed limit up to 75 mph. Being on those 55 and 60 mph roads gives a definite boost in economy. I've found that each 5 mph is worth about .5 mpg.
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