Page 387 of 416

WARNING:The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler door (Easy Fuel™ “no cap”
fuel system), do not refuel until the sound stops. Otherwise, fuel may
spray out, which could cause serious personal injury.
Flex Fuel Vehicle (FFV) fuel fill inlet
Flex fuel vehicles have a yellow bezel placed over the fuel fill inlet.
Choosing the right fuel
Use only UNLEADED FUEL and FUEL ETHANOL (Ed75–Ed85).
The use of leaded fuel is prohibited by law and could damage your
vehicle.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives.
Note:Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.
Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with a
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” in
high altitude areas that are sold with octane ratings less than 87.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your authorized dealer to
prevent any engine damage.
87(R+M)/2 METHOD
2009 Expedition(exd)
Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
387
Page 392 of 416

Driving style — good driving and fuel economy habits
Give consideration to the lists that follow and you may be able to change
a number of variables and improve your fuel economy.
Habits
•Smooth, moderate operation can yield up to 10% savings in fuel.
•Steady speeds without stopping will usually give the best fuel
economy.
•Idling for long periods of time (greater than one minute) may waste
fuel.
•Anticipate stopping; slowing down may eliminate the need to stop.
•Sudden or hard accelerations may reduce fuel economy.
•Slow down gradually.
•Driving at reasonable speeds (traveling at 55 mph [88 km/h] uses 15%
less fuel than traveling at 65 mph [105 km/h]).
•Revving the engine before turning it off may reduce fuel economy.
•Using the air conditioner or defroster may reduce fuel economy.
•You may want to turn off the speed control in hilly terrain if
unnecessary shifting between the top gears occurs. Unnecessary
shifting of this type could result in reduced fuel economy.
•Warming up a vehicle on cold mornings is not required and may
reduce fuel economy.
•Resting your foot on the brake pedal while driving may reduce fuel
economy.
•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toMaintenance product
specifications and capacitiesin this chapter.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found inscheduled maintenance information.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
2009 Expedition(exd)
Owners Guide, 1st Printing
USA(fus)
Maintenance and Specifications
392
Page 412 of 416

checking and adding ..............372
dipstick ....................................372
filter, specifications ........374, 400
recommendations ...................374
refill capacities ........................401
specifications ..........................401
Event data recording ....................7
Exhaust fumes ..........................287
F
Fail safe cooling ........................381
Family entertainment system ....51
Flexible Fuel Vehicle (FFV) ....383
Floor mats .................................155
Fluid capacities .........................401
Fog lamps ....................................96
Four-Wheel Drive vehicles .......311
control trac .............................311
description ..............................312
driving off road .......................313
indicator light .........................311
preparing to drive your
vehicle .....................................299
Fuel ............................................383
calculating fuel
economy ..................132, 143, 390
cap ...........................................386
capacity ...................................401
choosing the right fuel ...........387
comparisons with EPA fuel
economy estimates .................393
detergent in fuel .....................389
filler funnel .............................389
filling your vehicle with
fuel ...........................383, 386, 390
filter, specifications ........383, 400
fuel pump shut-off switch .....323
improving fuel economy ........390octane rating ...........387–388, 405
quality ......................................388
running out of fuel .........341, 389
safety information relating to
automotive fuels .....................383
Fuel - flex fuel vehicle
(FFV) .........................383, 387–388
Fuses ..................................324–325
G
Gas cap (see Fuel cap) ............386
Gas mileage
(see Fuel economy) .................390
Gauges .........................................17
H
Hazard flashers .........................322
Headlamps ...................................95
aiming ........................................97
autolamp system .......................95
bulb specifications ..................101
daytime running lights .............96
flash to pass ..............................96
high beam .................................96
replacing bulbs .......................102
turning on and off ....................95
Heating
heating and air conditioning
system .................................84–85
Homelink wireless control
system ........................................127
Hood ..........................................368
How to get going ........................20
I
Ignition ...............................284, 405
2009 Expedition(exd)
Owners Guide, 1st Printing
USA(fus)
Index
412