I've got a 2006 2500HD 6.0L,4WD,AUTO,Ext.Cab. I was wondering what kind of gas mileage you guys were getting with the 6.0L. I get around 13.5mpg not towing and about 10mpg towing my 36' Fifth wheel camper and farm tractor.

 

From what I've read thats about what you will get. You can read our MPG tips sticky for more ideas.

 

Yeah thats about right...with the Black Bear computer tune it increased a little.

 

just drove 1200 miles pulling a 30 ft travel trailer got 8-10 mpg 04 crew 8ft bed 6.0 83000 miles with265 tires

 

2005 crew 6.5ft box. 103000km. Gets about 600 clicks to a tank. If I set the cruise on 105. Faster and it eats gas.