Increasing Fuel Efficiency.

It's tough but the only way to really increase mileage is to modify your driving habits. I do a lot of hwy driving so I'm better able to make those adjustments. I dropped from cruising at 78 down to 65 and went from 20-21 to 23-24MPG. Slow starts from stops and shifting at 2 grand helps also. If I'm coming to a stop I put it in neutral and coast in. All minor deals but aside from the normal oil changes and tire inflation recommendations (big one if your low on pressure) there isn't a whole lot you can do.

A tire pressure note...we bought an 03 Expedition this past summer and took a trip to the in-laws in Mississippi (250 miles hwy) and then to the beach in Florida. I was getting about 16MPG on the way and was wondering why I was getting such bad hwy mileage when my 97 Expy would get 19-20 on the hwy. Checked the tire pressures (I assumed the dealer had done that) and they were all 7-10 lbs low. Got them to the right pressures and the mileage was at 20.