Re: WK2 3.6 l V6 Decrease in mpg.
yup, it's the winter gas. All of my vehicles within the past 8yrs have done the same. I couldn't ever do better then 17/18mpg with our tahoe from nov-feb, but come march it would shoot back up near 20mpg (hwy)
2011 Overland, Dk Charcoal Pearl, Black/Saddle w/Summit Wood Trim Swap, V6, QL, 20" wheels, 730N