Zach is taking the Chevy 2500 3/4 ton truck on our MPG loop to see just how it does for highway driving efficiency. We realize folks use their trucks as daily drivers and it's great to have a baseline expected highway efficiency figure to plan fuel budgets, so that's what we provide with this test! Let's see how well the 6.6 Duramax V8 sips fuel in our 70mph highway fuel economy test.

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#Chevrolet #Silverado #Duramax