I just bought a 2003 Excursion with the V10 engine and love it by the way. However I am trying to see if there is anyway to boost my gas mileage. Right now I am getting 13-14mpg in the city and 18-20mpg on the highway. Any suggestions?

 

Consider yourself lucky.

 

Sounds like you are doing alright now. Things to remember: tire pressure, air filter, fuel filter, igntion parts, oil/fluids, etc. Another big factor is driving style, try to be as easy as possilbe, keep the speed down, run in overdrive as much as possilbe (lowest RPM's). Also aftermarket parts like free-flowing mufflers and such can help, granted you don't hit the gas more to hear it.