The computer display is showing 19 mpg. I need some help trying to figure out what could be wrong. It is a 2007 lt with the 2.2 liter and has 43k miles on it. Now I know that the gas stations have switched to the winter blend but this is still very low gas mileage. What can I do? Im not due for a oil change yet and had tranny flush in may. I need some serious help.