Well all suggestions I will look into... For the record no its not in 4x4 I may be a girl but not that silly, plus the winter here has been very mild with little snow no need for 4x4 yet since i got her. Except for one week where temps dipped and I expected higher fuel mileage at -38 with wind chill, but an average of -2 should not cause this situation in my truck. I don't Idle long either as she's always kept in the garage.
I'm also not driving hills mainly flat terrain and yes I used to have a heavy foot when she was not doing this, but have since had to drive Lightly because she's chugging gas right now. Which is part of the frustration because I really want to be enjoying her.
As always thanks for all suggestions and ideas all are welcomed and appreciated.