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โOct-16-2013 03:48 PM
hone eagle wrote:
The compression ratio's have been inching down bit by bit for a while now ,that and all the other measures to reduce NOX have hurt efficiency .
โOct-16-2013 03:02 PM
โOct-16-2013 02:50 PM
โOct-16-2013 02:37 PM
panthercity wrote:Me Again wrote:BB_TX wrote:
Those numbers are just about dead on with what I have gotten pulling my 35' 5er, both with my previous '07 F350 6.0 and my current '12 F350 6.7 running at posted speed limits on the highways (up to a max of 68-70). Could probably do a little better if I slowed down to 60-65.
The is a bit disappointing! These trucks are getting better and better in so many ways except for fuel mileage. In the early 2000's it was common for Duramax GM's, 7.3 Powerstrokes and Dodge/Cummins to deliver towing mileage in the 12-13 MPG range.
Are people just all towing to fast with them now? I tow at around 62-63 MPH most of the time and average 12.2 to 12.5, and can be as high as 13.5-14 in central California at 59 MPH on flat no wind legs.
I was hoping that the new DEF RAMs would be back up in that range!!!!
Chris
That was before USLD in 2006. Then GM changed their emissions systems to burn the particulate by injecting extra fuel whenever the particulate trap got full. That and new/different tuning impacted mileage significantly.
โOct-16-2013 02:11 PM