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Old 01-12-2016, 06:59 AM   #10
Senior Member
Join Date: Jun 2012
Location: Spotsylvania
Posts: 376

So reading between the lines here. If I put my right foot on a diet and my manual calculations still yield 5.5mpg I may have a mechanical issue? Over on the trucker's forums they talk about air leaks causing economy problems, I guess it would bark up that tree at that point. Thanks for the insights.
2006 Renegade/Freightliner Coronado 43', Detroit, twin screw, 12spd
2001 Ford Excursion PSD
2017 Ford F450
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