mjn
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I have heard that crap for 20 yrs. Might have been so 20 yrs ago, but not anymore. I have heard 22-24mpg on 3500 4X4 CC ...... BS. Maaaaaaaybe could get 20mpg out of mine ('17) on interstate at 55mph, no A/C, with good tail wind! Who drives 55 on interstate??? High side at 75mph is less than 16 .... REAL numbers, not computer BS. Pulling a loaded trailer 7-8 at 75mph, maybe 8.5-9 at 65mph. '02 and '08 Duramax did just as good comparatively. '17 3500 Laramie in NON delete.
Yea.. I believe that. I rarely drive my Ford without my trailer, so I'm not certain what it'd do empty on the hwy.
With my 8.5 X 20 (+6" height) cargo trailer loaded with the Pioneer, running 78mph, it gets about 9mpg. Back that off to 72 or so, & it's 10. Around town empty, it pulls down around 14 or so.