I have a '95 F150 4x4 with the 5.0. with 103K miles. I know this engine isn't supposed to get great mileage. I still have the original dealership sticker and it says 15-18 mpg. I would LOVE to get 15! Right now I'm getting about 7-8 max!!! I do not have a lead foot by any means. Is there something obvious I should investigate? I recently replaced the TPS which I'm sure would have really nothing to do with it. It is not currently throwing a code. Tire pressure is right on too.
Please help!!!
Thanks in advance!

 

Are you using tires that are larger than stock?