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Posted by bill [166.129.21.245] on Friday, February 11, 2011 at 11:46:24 :
In Reply to: 99 2500 Cummins MPG? posted by Jon in NC [152.27.33.2] on Friday, February 11, 2011 at 08:40:49 :
All around driving on a tank of gas(35gal.) religiously 17-18 mpg. One time I went on a 200 mile road trip doing 55mph just to check it and it got 22.5 mph. It was a 12 valve, diesel,97 4x4crew cab, LB. with the higher stock gear ratio (can't remember now what it was). Put my bass boat behind it (2500-3000 lbs.) and it would drop down to 15-16 mpg.
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