Duramax vs Power Stroke Fuel Economy Tow Test and Drag Race
Enjoy... Fuel Economy Test: Power Stroke: 7.8mpg Duramax: 6.9mpg Link
Forum Discussion
"IF I let the computer do the shifting allowing it to go into 6th. If I lockout 6th and to in 5th(which is still an overdrive gear) then that brings my rpms up to the Cummins recommended rpms of 1,800-"
Let's stick to reality. If "you" are pulling a steep grade letting the trans do it's job you are NEVER seeing 6th.
I towed with 3.42's at 29k combined and yes on FLAT ground it would go into 6th but you put a hill in front of it and 6th was a long lost memory.
The GM simply did not do what it should, electronics???
Let's stick to reality. If "you" are pulling a steep grade letting the trans do it's job you are NEVER seeing 6th.
I towed with 3.42's at 29k combined and yes on FLAT ground it would go into 6th but you put a hill in front of it and 6th was a long lost memory.
The GM simply did not do what it should, electronics???
