service FORD F250 1998 Owner's Manual

and could, under certain
conditions, lead to engine damage
which is not covered by your
warranty.
Changing the engine oil and
filter
Change your engine oil and filter
according to the following mileage
and time requirements, whichever
occurs first:
²Normal Schedule ± 8,000 km
(5,000 miles) or six months.
²Severe Duty Schedule - 5,000
km (3,000 miles) or three
months. Severe duty operation
would include extensive idling,
trailer towing, driving in severe
dust and police, taxi or delivery
service.
Ford production and aftermarket
(Motorcraft) oil filters are designed
for added engine protection and
long life. If a replacement oil filter
is used that does not meet Ford
material and design specifications,
startup engine noises or knock
may be experienced.
It is recommended you use the
appropriate Motorcraft oil filter (or
another brand meeting Ford
specifications) for your engine
application.
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Leave a 50/50 mixture of engine
coolant and water in your vehicle
year-round in non-extreme
climates.
What you should know about
fail-safe cooling (if equipped)
If the engine coolant supply is
depleted, this feature allows the
vehicle to be driven temporarily
before incremental component
damage is incurred. The ªfail safeº
distance depends on ambient
temperatures, vehicle load and
terrain.
How fail-safe cooling works
If the engine overheats, the engine
will automatically switch from
eight to alternating four cylinder
operation. Each disabled cylinder
acts as an air pump and cools the
engine.
When this occurs, the engine
coolant temperature gauge will
move into the red area and the
light illuminates.
The service engine soon light will
illuminate, indicating that vehicle
service is required.
The vehicle will still operate, but
will have limited engine power and
no air conditioning capability.
Continued operation will increase
engine temperature and cause the
engine to completely shut down.
The vehicle will coast to a stop.
H
C
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As the engine temperature cools,
the engine may be re-started. Take
your vehicle to a service facility as
soon as possible to minimize
engine damage.
When fail-safe mode is
activated
²Pull off the road as soon as
possible.
²Immediately turn the engine off
to prevent severe engine
damage.
²Wait for the engine to cool.
²Check the coolant level.
CHECKING AND ADDING
POWER STEERING FLUID
Check the power steering fluid at
least twice a year. If adding fluid is
necessary, use only MERCONt
ATF power steering fluid.
1. Start the engine and let it run
until it reaches normal operating
temperature (the engine coolant
temperature gauge will be near the
center of the NORMAL band).
2. While the engine idles, turn the
steering wheel left and right
several times.
3. Turn the engine off.
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4. Check the fluid level in the
reservoir. It should be between the
MIN and MAX lines. Do not add
fluid if the level is in this range.
5. If the fluid is low, add fluid in
small amounts, continuously
checking the level until it reaches
the range between the MIN and
MAX lines. Be sure to put the cap
back on the reservoir.
TRANSMISSION FLUID
Checking and adding automatic
transmission fluid
Follow the scheduled service
intervals outlined in the ªService
Guide.º
Before adding any fluid, make sure
the correct type is used. The type
of fluid used is normally indicated
on the dipstick and/or dipstick
handle and also in theLubricant
specificationssection in the
Capacities and specifications
chapter.
An overfill condition of
transmission fluid may cause
shift and/or engagement
MAX
MIN
MAX
MIN
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3. Add only enough fluid through
the filler opening so that the fluid
level is at the bottom of the
opening.
Use only fluid that meets Ford
specifications. Refer to the
Capacities and specifications
chapter.
DRIVELINE UNIVERSAL JOINT
AND SLIP YOKE
The universal joints standard with
your vehicle do not require
lubrication. If the original universal
joints are replaced with universal
joints equipped with grease
fittings, lubrication will be
necessary.
BATTERY
Your vehicle may be equipped with
a Motorcraft maintenance-free
battery. If the original equipment
battery needs replacing, it may be
replaced with a low-maintenance
battery. The low-maintenance
battery normally does not require
additional water during its life of
service. However, for severe usage
or in high temperature climates,
check your battery electrolyte
level, at least every 24 months or
40,000 km (24,000 miles). Keep
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treatments used by commercial car
washes reduce the effectiveness of
wiper blades.
Checking the wiper blades
If the wiper blades do not wipe
properly, clean both the windshield
and wiper blades using 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.
Changing the wiper blades
When replacing wiper blade
assemblies, always use a
Motorcraft part or equivalent. To
make replacing the wipers easy,
turn the ignition to ACC, then turn
the wipers on. When the wipers
reach the vertical position, turn
the ignition to LOCK.
To replace the wiper blades:
1. Pull the wiper arm away from
the windshield and lock into the
service position.
2. Turn the blade at an angle from
the wiper arm. Push the lock pin
with a screwdriver to release the
blade and pull the wiper blade
down toward the windshield to
remove it from the arm.
3. Attach the new wiper to the
wiper arm and press it into place
until a click is heard.
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tires depends upon the actual
conditions of their use, however,
and may depart significantly from
the norm due to variations in
driving habits, service practices,
and differences in road
characteristics and climate.
Traction A B C
The traction grades, from highest
to lowest are A, B, and C, and they
represent the tire's ability to stop
on wet pavement as measured
under test surfaces of asphalt and
concrete. A tire marked C may
have poor traction performance.
The traction grade
assigned to this tire is
based on braking (straight
ahead) traction tests and does
not include cornering (turning)
traction.
Temperature A B C
The temperature grades are A (the
highest), B, and C, representing
the tire's resistance to the
generation of heat and its ability to
dissipate heat when tested under
controlled conditions on a
specified indoor laboratory test
wheel. Sustained high temperature
can cause the material of the tire
to degenerate and reduce tire life,
and excessive temperature can
lead to sudden tire failure. The
grade C corresponds to a level of
performance which all passenger
car tires must meet under the
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Tire rotation
Because your vehicle's tires
perform different jobs, they often
wear differently. To make sure
your tires wear evenly and last
longer, rotate them as indicated in
the ªService Guide.º If you notice
that the tires wear unevenly, have
them checked.
²Four tire rotation
²Five tire rotation
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control devices and systems may
be adversely affected.
Repair of damage caused by using
a fuel that your vehicle was not
designed for may not be covered
by your warranty.
Octane recommendations
Your vehicle is designed to use
regular unleaded with an (R+M)/2
octane rating of 87. We do not
recommend gasolines labeled as
ªregularº in high altitude areas that
are sold with octane ratings of 86
or even less.
Do not be concerned if your
vehicle sometimes knocks lightly.
However, if it knocks heavily under
most driving conditions on fuel
with the recommended octane, see
your dealer or a qualified service
technician to prevent any engine
damage.
Fuel quality
If you are experiencing starting,
rough idle or hesitation problems
try a different brand of fuel. If the
condition persists, see your dealer
or a qualified service technician.
The American Automobile
Manufacturers Association (AAMA)
issued a gasoline specification to
provide information on high quality
fuels that optimize the
performance of your vehicle. We
recommend the use of gasolines
that meet the AAMA specification
if they are available.
87
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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
Guideº are required because they
are considered essential to the life
and performance of your vehicle
and to its emissions system.
If other than Ford, Motorcraft or
Ford authorized parts are used for
maintenance replacements or for
service of components affecting
emission control such non-Ford
parts should be equivalent to
genuine Ford Motor Company
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