Posted 3/9/2008 18:59 (#330042 - in reply to #330019) Subject: Re: Chevy's 6.0 vortec gas engine
N/E Iowa
I have a 2005, 6.0 liter automatic. With a 4.11 rear end. 40,000 miles on it. plenty of power, runs good, chitty gas mileage 9 to 10 under a load, and 12 to 14 highway. I have yet to hear of ANY 6.0 gas get better than 15 mpg just taking it easy driving around!! So far it's treated me well.