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Today we got 10.5 as Dave said the new Trucks aren't doing as well as my 2007 Chevy Classic, the 2008 Chevy 3500 is equiped the same way. First I got 11 mpg, needless to say I didn't like that. However it is getting better now just over 5,700 miles. I ran 60 mph today so if I can get 10+ towing I want complain. If you stand on it, it want do well at all. But I Love the Duramax/Allison. Good Luck with the new ride. It is a towing machine. I'm still trying to find the sweet spot, on the trip back I will run 65 mph but I always stay under 65. The 2nd A/C doing fine CW done a good job. GBY....
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