Re: Enclosed Trailers....
My son has an '02 D'max/allison 4WD Crew cab Dually. He has the tune-on-the-fly programmer, 5" exhaust and an upgraded air box. He runs right at or over 20 mpg on the highway. I hooked my 20' enclosed trailer to it and it pulled the mileage down to 19! [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img] He pulled a 40' open gooseneck with two mud trucks (full size 1/2 ton p/u), and still got 15 mpg on the open road.
The DuraMax engine is one of GMs best products, and like Rob said above, you can get pretty good pricing on them if you're looking to buy used.
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10-07-2011, 08:23 PM
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