MARK VANDERBENT wrote:
That 6.2 is one awesome motor !! Can get some pretty good fuel mileage too. Now you can see why people with that engine in their Silverado's and sierra's love them so much !!
With the 8-speed it's even better! We have several in the family, and have done side-by-side mileage comparisons across the Mojave Desert, to see how they compare (6.2 / 6-speed vs 6.2 / 8-speed). Not towing, but with 300-400 lbs of cargo & 2 passengers, the 6.2 / 8-speed can get 22 MPG over a 300-mile trip going 70-75 MPH. This includes some small-medium grades on I-40. On the same run, the 6.2 with the 6-speed was getting 19.5 MPG.
We saw similar improvements with the 8-speed when towing 7,000 lb boats with each, but I forget the exact MPG - it was last summer.
Note: that's hand-calculated, not depending on the trip computer.