1998 FORD EXPEDITION fuel

recommend the use of gasolines
that meet the AAMA specification
if they are available.
It should not be necessary to add
any aftermarket products to your
fuel tank if you continue to use a
high-quality fuel.
Cleaner air
Ford approves the use of gasolines
to improve air quality, including
reformulated gasolines that contain
oxygenates up to 10% ethanol or
15% MTBE.
Do not use gasolines containing
methanol, which can damage
critical fuel system components.
Damage resulting from the use of
methanol may not be covered by
your warranty.
Filling the fuel tank
1. Turn the engine off. After
opening the fuel door, remove the
cap carefully and slowly by turning
it counterclockwise
1¤4turn until it
stops. Pull to remove the cap. A
tether attaches the cap to the fuel
filler pipe.
2. Make sure that you pump
unleaded fuel and put the fuel
nozzle inside the fuel filler pipe.
²To optimize fill, it may be
necessary to reposition the
nozzle in the filler pipe.
SNAPON
SNAPREM0VETHENPULLTO
Maintenance and care
181

²To help reduce early nozzle shut
off and fuel spillage, park your
vehicle so the fuel filler door is
level.
²Avoid excessively fast fuel
dispensing rates (over 38 L
[10 gallons] per minute).
²If you spill fuel on the body of
your vehicle, clean it off
immediately. The fuel may dull
or soften the paint if it is not
washed off promptly.
²To replace the fuel cap, align
the tabs on the cap with the
notches on the fuel filler pipe.
Turn it clockwise until it stops.
²Push the fuel door closed.
If the check engine warning light
illuminates and remains illuminated
while the engine is started, the
fuel cap may not be properly
seated. Turn off the engine,
remove the fuel cap and replace it,
being sure to align the cap
properly.
If the cap is lost, replace it with an
authorized Motorcraft or equivalent
part.
Calculating fuel economy
To accurately calculate your
vehicle's fuel economy:
1. Fill the tank completely and
record the initial odometer
reading.
2. Each time you fill the tank,
record the amount of fuel added
(in liters or gallons).
Maintenance and care
182

3. After at least three to five fuel
tank fill-ups, fill the fuel tank and
record the current mileage
reading.
4. Use one of the following
equations to calculate fuel
economy.
Liters used x 1004Total
kilometers traveled
Total miles traveled4Total
gallons used
Keep a record for at least one
month. This will provide an
accurate estimate of the vehicle's
fuel economy.
EMISSION CONTROL SYSTEM
Your vehicle is equipped with
various emission control
components and a catalytic
converter which will enable your
vehicle to comply with applicable
exhaust emission standards. To
make sure that the catalytic
converter and other emission
control components continue to
work properly:
²Use only unleaded fuel.
²Avoid running out of fuel.
²Do not turn off the ignition
while your vehicle is moving,
especially at high speeds.
²Have the services listed in your
ªService Guideº performed
according to the specified
schedule.
The Scheduled Maintenance
Services listed in the ªService
Maintenance and care
183

any bugs and tar before waxing
vehicle. Use cleaning fluid or
alcohol with a clean cloth to
remove. Use tar remover to
remove any tar spots.
Repairing paint chips
Minor scratches or paint damage
from road debris may be repaired
with touch-up, paint repair foil or
aerosol paint spray from the Ford
accessory line. Observe the
application instructions on the
products.
Remove particles such as bird
droppings, tree sap, insect
remains, tar spots, road salt and
industrial fallout immediately.
Cleaning the wheels
Wash with the same detergent as
the body of your vehicle. Do not
use acid-based wheel cleaners,
steel wool, fuel or strong
detergents. Never use abrasives
that will damage the finish of
special wheel surfaces. Use a tar
remover to remove grease and tar.
Cleaning the engine
Engines are more efficient when
they are clean because grease and
dirt buildup keep the engine
warmer than normal. When
washing:
²Take care when using a power
washer to clean the engine. The
high pressure fluid could
penetrate the sealed parts and
cause damage.
Maintenance and care
195

To avoid scratching the lamps, do
not use a dry paper towel,
chemical solvents or abrasive
cleaners.
Cleaning the wiper blades
If the wiper blades do not wipe
properly, clean the windshield and
wiper blades with undiluted
windshield wiper solution or a mild
detergent. Rinse thoroughly with
clean water. To avoid damaging the
blades, do not use fuel, kerosene,
paint thinner or other solvents.
Cleaning the instrument panel
Clean with a damp cloth, then dry
with a dry cloth.
Avoid cleaner or polish that
increases the gloss of the upper
portion of the instrument panel.
The dull finish in this area helps
protect the driver from undesirable
windshield reflection.
Cleaning the interior fabric
Remove dust and loose dirt with a
whisk broom or a vacuum cleaner.
Remove fresh spots immediately.
Follow the directions that come
with the cleaner.
Cleaning and maintaining the
safety belts
Clean the safety belts with a mild
soap solution recommended for
cleaning upholstery or carpets. Do
not bleach or dye the belts,
because these actions may weaken
the belt webbing.
Maintenance and care
197

MOTORCRAFT PART NUMBERS
Component 4.6L engine 5.4L engine
Air filter FA-1632 FA-1632
Fuel filter FG-872 FG-872
Battery (standard) BXT-59 BXT-59
Battery (optional) BXT-65-750 BXT-65-750
Oil filter FL-820-S FL-820-S
PCV Valve EV-98 EV-233
Spark plugs*-platinum AWSF-32PP AWSF-22E
* Replacement double platinum spark plug ªEEº will replace ªEº and
ªEGº and ªPº will replace ªPº and ªPGº suffixed spark plugs.
REFILL CAPACITIES
Fluid Ford Part
NameApplication
Capacity
Engine oil
(includes filter
change)Motorcraft 5W30
Super Premium
Motor OilAll
5.7L
(6.0 quarts)
Brake fluid Ford High
Performance
DOT 3 Brake
FluidAll
Fill to line in
reservoir
Power steering
fluidMotorcraft
MERCONtAT FAll Fill to line in
reservoir
Transmission
fluidMotorcraft
MERCONtV
AT F4R70W
13.1L
(13.9 quarts)
Motorcraft
MERCONtAT FE4OD (4 x 2)15.0L
(15.9 quarts)
E4OD (4 x 4) 15.5L
(16.4 quarts)
Transfer case
fluidMotorcraft
MERCONtAT F4 x 4 vehicles 1.9L
(2.0 quarts)
Capacities and specifications
200

inch) below the bottom of the filler
hole.
LUBRICANT SPECIFICATIONS
ItemFord part
nameFord part
numberFord
specification
Windshield
washer fluid
reservoirUltra-Clear
Windshield
Washer
ConcentrateC9AZ-19550-AC
OR -BCESR-M17P5
Body hinges,
latches, door
striker plates
and rotors, seat
tracks, fuel filler
door hinge and
spring, hood
latch, auxiliary
latchMulti-Purpose
GreaseD7AZ-19584-AA
OR
DOAZ-19584-AAESR-M1C159-A
OR
ESB-M1C93-B
Lock cylinders,
swing-away
spare tire carrier
padlockPenetrating
LubricantE8AZ-19A501-B NONE
Brake master
cylinderHigh
Performance
DOT 3 Motor
Vehicle Brake
FluidC6AZ-19542-AB ESA-M6C25-A
AND DOT 3
Driveshaft, slip
spline, double
Cardan joint
center ballPremium Long
Life GreaseXG-1-C or
XG-1-KESA-M1C75-B
Engine coolant Ford Premium
Cooling System
FluidE2FZ-195490-AA ESE-M97B44-A
Capacities and specifications
202

complete refill of Ford
Traction-Lok rear axles.
ENGINE DATA
Engine 4.6L engine 5.4L engine
Cubic inches 281 330
Horsepower 215 @ 4400 rpm 230 @ 4250 rpm
Torque 290 lb. ft. @ 3250 rpm 325 lb. ft. @ 3000 rpm
Required fuel grade 87 octane 87 octane
Firing order 1-3-7-2-6-5-4-8 1-3-7-2-6-5-4-8
Spark plug gap 1.3-1.4 mm
(0.052-.056 inch)1.3-1.4 mm
(0.052-.056 inch)
Ignition system EDIS Coil on plug
Compression ratio 9.0:1 9.0:1
VEHICLE DIMENSIONS
Dimensions mm (in.)
(1) Overall length 5 196 (204.6)
(2) Overall width 2 027 (79.8)
(3) Maximum height 4x2/4x4 1 969.8 (77.6)/2 043 (80.4)
(4) Wheelbase 3 023 (119.0)
(5) Front track 1 661 (65.4)
Capacities and specifications
204