1999 FORD MUSTANG Owners Manual

Engine oil and filter recommendations
Look for this
Certification
Trademark.
Use SAE 5W-30 motor oil certified for gasoline
engines by the American Petroleum Institute (API).
Motor oil displaying the API Certification Trademark
will meet all requirements for your vehicle's engine.
Ford oil specification is WSS-M2C153-G.
Do not use supplemental engine oil additives, oil
treatments or engine treatments. They are
unnecessary and could, under certain conditions,
lead to engine damage which is not covered by your
warranty.
Change your engine oil and filter according to the
appropriate schedule listed in the Scheduled
Maintenance Guide.
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.
BRAKE FLUID
Checking and adding brake fluid
Brake fluid should be checked and refilled as
needed. Refer to the Scheduled Maintenance Guide
for the service interval schedules:
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137

²3.8L OHV V6 engine
²4.6L SOHC V8
engine
1. Clean the reservoir cap before removal to prevent
dirt or water from entering the reservoir.
2. Visually inspect the
fluid level.
3. If necessary, add
brake fluid until the
level reaches MAX. Do
not fill above this line.
4. Use only a DOT 3 brake fluid certified to meet
Ford specifications. Refer toLubricant
specificationsin theCapacities and specifications
chapter.
MAX
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138

Brake fluid is toxic.
If you use a brake fluid that is not DOT 3,
you will cause permanent damage to your
brakes.
Do not let the reservoir for the master
cylinder run dry. This may cause the brakes
to fail.
CLUTCH ADJUSTMENT (IF EQUIPPED)
Check the clutch
adjustment. Refer to
the Scheduled
Maintenance Guide for
the service interval
schedules.
The clutch on your
vehicle is operated by a
cable. As necessary, adjust the clutch as described
below.
1. Turn the engine off and shift into 1 (First).
2. Put your foot under the clutch pedal and gently
pull it up until the pedal stops.
3. Push the clutch pedal down slowly. You will hear a
click as the clutch adjusts itself.
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139

WINDSHIELD WASHER FLUID
Checking and adding washer fluid
Check the washer fluid
whenever you stop for
fuel. The reservoir is
highlighted with a
symbol.
If the level is low, add
enough fluid to fill the
reservoir. In very cold
weather, do not fill the
reservoir all the way.
Do not put engine coolant in the container
for the windshield washer fluid.
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140

ENGINE COOLANT
²3.8L OHV V6 engine
²4.6L V8 engine
Check the level of the engine coolant in the
reservoir. Refer to the Scheduled Maintenance Guide
for service interval schedules. Be sure to read and
understandPrecautions when servicing your
vehiclein this chapter.
If the engine coolant has not been checked at the
recommended interval, the engine coolant reservoir
may become empty. If this occurs, add engine
coolant to the coolant reservoir. For more
information on engine coolant maintenance, refer to
Adding engine coolantin this chapter.
Automotive fluids are not interchangeable;do not
use engine coolant, antifreeze or windshield washer
fluid outside of its specified function and vehicle
location.
Maintenance and care
141

Adding engine coolant
Use only Ford Premium Engine Coolant
E2FZ-19549±AA (in Oregon, F5FZ-19549±CC, in
Canada, Motorcraft CXC-10) or a premium
engine coolant that meets Ford specification
ESE-M97B44±A.
²DO NOT USE Ford Extended Life Engine
Coolant F6AZ-19544±AA (orange in color).
²DO NOT USE a DEX-COOLtengine coolant
or an equivalent engine coolant that meets
Ford specification WSS-M97B44±D.
²DO NOT USE alcohol or methanol antifreeze
or any engine coolants mixed with alcohol or
methanol antifreeze.
²DO NOT USE supplemental coolant additives
in your vehicle. These additives may harm
your engine's cooling system.
²DO NOT MIX recycled coolant and
conventional coolant together in your
vehicle. Mixing of engine coolants may harm
your engine's cooling system.
²The use of an improper coolant may harm
engine and cooling system components and
may void the warranty of your vehicle's
engine cooling system.
²Use only the type of coolant with which your
vehicle was originally equipped. If you are
unsure which type of coolant your vehicle
requires, contact your local dealer.
Do not put engine coolant in the container
for the windshield washer fluid.
If sprayed on the windshield, engine coolant could
make it difficult to see through the windshield.
When the engine is cool, add a 50/50 mixture of
engine coolant and distilled water to the engine
coolant reservoir.
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142

Plain water may be added in an emergency, but you
mustreplace it with a 50/50 mixture of coolant and
distilled water as soon as possible.
Check the coolant level in the coolant reservoir the
next few times you drive the vehicle. If necessary,
add enough of a 50/50 mixture of coolant and
distilled water to bring the liquid level to the fill line
on the reservoir.
Never remove the coolant reservoir cap
while the engine is running or hot.
If you must remove the coolant reservoir cap, follow
these steps to avoid personal injury:
1. Before you remove the cap, turn the engine off
and let it cool.
2. When the engine is cool, wrap a thick cloth
around the cap. Slowly turn cap counterclockwise
until pressure begins to release.
3. Step back while the pressure releases.
4. When you are sure that all the pressure has been
released, use the cloth to turn it counterclockwise
and remove the cap.
Change your engine coolant according to the
appropriate schedule listed in the Scheduled
Maintenance Guide.
Recycled engine coolant
Ford Motor Company recommends that Ford and
Lincoln-Mercury dealers use recycled engine coolant
produced by Ford-approved processes.
Not all coolant recycling processes produce coolant
which meets Ford specification ESE-M97B44±A, and
use of such coolant may harm engine and cooling
system components.
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143

Always dispose of used automotive fluids in a
responsible manner. Follow your community's
regulations and standards for recycling and disposing
of automotive fluids.
Coolant refill capacity
To find out how much fluid your vehicle's cooling
system can hold, refer toRefill capacitiesin the
Capacities and specificationschapter.
Have your dealer check the engine cooling system
for leaks if you have to add more than 1.0 liter (1.0
quart) of engine coolant per month.
Severe winter climate
If you drive in extremely cold climates (less than
±36ÉC [±34ÉF]), it may be necessary to increase the
coolant concentration above 50%. Refer to the chart
on the coolant container to ensure the coolant
concentration in your vehicle is such that the
coolant will not freeze at the temperature level in
which you drive during winter months. Never
increase the coolant concentration above 60%.
Increased engine coolant concentrations above 60%
will decrease the freeze protection characteristics of
the engine coolant. Vehicles driven year-round in
non-extreme climates should use a 50/50 mixture of
engine coolant and distilled water for optimum
freeze protection.
CHECKING AND ADDING POWER STEERING
FLUID
Check the power steering fluid. Refer to the
Scheduled Maintenance Guide for the service
interval schedules. If adding fluid is necessary, use
only MERCONtAT F.
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144