Truck has 6" suspension lift, 20" rims, 35" tires, and full flowmaster dual exhaust. Only getting aroung 10mpg. No warning or engine lights on. just replaced o2 sensor #2 in bank 2. No other codes in computer. I know lift and tires hurt mpg, but that much? supposed stock rating at 18 mpg. HELP!
May 18, 2012 at 4:09 AM