Hey guys what are you getting for fuel mileage on your DBZ Duramax engines preferably in a 2500 4x4 crew cab short box.

Thanks

I average around 16.5 with mine around town. If I am lucky I can get 18.5 on the highway. I get around 12.5 on the highway towing 9000lbs boat. I get 10.5 towing an enclosed car trailer on the highway. Hope this help. Jeff Wurl

I used my buddys standard cab 4x4 hd 2500..if i kept it at 2000 rpms i would get 22 mpg...4.10 gears and 285 75 16 tires.

o and its bone stock..

Also this was going from chicago to missouri..all flat land and no hillls,,it may change on hilly terrane..

i average 17 empty with a 3500 4x4 dually on the highway and about 15 or 16 in the city. but i have a 4" straight pipe and modified intake.

13.7-14.5 in town and 15.5-16.5 hwy 08 bone stock

06 2500 CC SB bone stock freeway under 2000rpm I get aroung 18-19

towing 10K I get 11

Wow my truck must have a problem Towing the Cig 11 to 12mpg all else not much better. Maybe its in my FOOT.
I saw 14mpg once. That is on paper not the DIC.
07 classic SRW 3500 crew

Thanks guys, I have a 6.0 liter gas in my 2500 it's terrible on mileage thinking about selling and getting a use 06 with the LBZ deisel.

try "wait for mr performance " in Indiana Jesse can pull 3 mpg from a 6.0 with his milage tune. it will never be a duramax but can improve the milage

The LBZ will get considerably better fuel economy than the LMM.

Sam