Forum Discussion
Too_Young_to_Re
Jun 11, 2014Explorer
I have a 2011 Silverado 3500 HD with the Duramax. It gets about 12-13 mpg when towing, and about 16 when not. I don't know if that's "best", but it's good enough for me. And it's for sale with 12,800 miles on it, and still under factory warranty.
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