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Old 09-11-2012, 07:27 AM   #47 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,422
Thanked 737 Times in 557 Posts
14-mpg is no slouch. I'd imagine terrain (altitude, and changes thereof) plays a role.

Do your calculations also note average speed? (Engine "on" time versus miles travelled).

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