Thanks for all the great advice so far!! Sorry I should have included the engine info. It is a 6.7 Diesel. I'm frustrated cause I have been driving a 2004 Cummins and it ranged up to 20 on the highway. I just had the computer reflashed (Recall) but it has made no difference. It has no other...
Just recently bought used 2007 Ram 3500 DRW with 52000 miles. Problem is I'm seriously only getting 10 MPG on Highway without hauling anything. Any Ideas?
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