how can i increase the milage on my duramax
I have 2008 2500HD Diesel, Love the truck, drive a lot of miles daily. What can I do to increase my overall milage. I average @ 16 mile per gallon every day driving. It does graet until the emmision starts burning off; the milage drops a ton. I running around $170.00 per week in fuel. I don't want to sell truck, but with fuel cost increasing I may be force to.