Any feedback on the 496 gas motors w/ the Allison 5 speed automatic? Looking at one today - it's a 2001.....
dont trade your 02 duramax for a 08 duramax, mines lucky to get 15 on the highway, and 7-8 pulling a gooseneck enclosedMy bosses gets about 8-9 mpg around town. There is a TSB on the oil consumption, new intake bolts and a new revised torque amount. Went from a quart a oil every 1000 miles to about a quart of oil every 3000 miles using 5w-30 Amsoil synthetic oil. I myself am a diesel man. My 02 2500HD Duramax gets 17 mpg around town. Last time checked diesel wasn't twice as much as regular so you do the math.