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If the vehicle’s powertrain system or its battery has
just been serviced, the on-board diagnostics system
is reset to a“not ready for I/M test”condition. To
ready the on-board diagnostics system for I/M
testing, a minimum of 30 minutes of city and
highway driving is necessary as described below:
•First, at least 10 minutes of driving on an
expressway or highway.
•Next, at least 20 minutes driving in stop-and-go,
city-type traffic with at least four idle periods.
Allow the vehicle to sit for at least eight hours
without starting the engine. Then, start the engine
and complete the above driving cycle. The engine
must warm up to its normal operating temperature.
Once started, do not turn off the engine until the
above driving cycle is complete.
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
MERCONAT F.
If your vehicle is
equipped with the
OHV V6 engine,
check the power
steering fluid level with
the engine at normal
operating temperature.
1. Start the engine and
let it run until it
reaches normal
operating temperature
(the engine coolant
temperature gauge
indicator will be near
the center of the
normal area between H
and C).
FILL
HOT
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
194
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BRAKE FLUID RESERVOIR
The fluid level will drop
slowly as the brakes
wear, and will rise
when the brake
components are
replaced. Fluid levels below the“MAX”line that do
not trigger the brake system warning lamp are
within the normal operating range, there is no need
to add fluid. If the fluid levels are outside of the
normal operating range, the performance of your
brake system could be compromised, seek service
from your dealer immediately.
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.
TRANSMISSION FLUID
Checking automatic transmission fluid
(if equipped)
Refer to your scheduled maintenance guide for
scheduled intervals for fluid checks and changes.
Your transmission does not consume fluid. However,
the fluid level should be checked if the transmission
is not working properly, i.e., if the transmission slips
or shifts slowly or if you notice some sign of fluid
leakage.
M
A
X
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
196
Page 217 of 240

Fluid Ford Part
NameApplication Capacity
Transmission
fluid
(4R70/75
E-W)
3
Motorcraft
MERCONV
AT FAutomatic
with OHV V6
engine13.1L
(13.9 quarts)
4
Automatic
with 4.6L
SOHC
V8/4.6L 4v V8
(Mach 1)
engine12.0L
(12.8 quarts)
4
Motorcraft
MERCON
AT FManual with
OHV V6
engine2.6L
(5.6 pints)5
Motorcraft
MERCON
AT FManual with
4.6L SOHC
V8/4.6L 4v V8
(Mach 1)
engine3.7L
(7.8 pints)5
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateAll 3.8L
(4.0 quarts)
1Add the coolant type originally equipped in your
vehicle.
2Rear axle lubricants do not need to be checked or
changed unless a leak is suspected, service is
required or the axle assembly has been submerged
in water. The axle lubricant should be changed any
time the rear axle has been submerged in water. Fill
6 mm to 14 mm (1/4 inch to 9/16 inch) below
bottom of fill hole. Add 118 ml (4 oz.) of Additive
Friction Modifier XL-3 or equivalent meeting Ford
specification EST-M2C118–A for complete refill of
Traction-Lok axles.
3Ensure the correct automatic transmission fluid is
used. Transmission fluid requirements are indicated
on the dipstick or on the dipstick handle. MERCON
and MERCONV are not interchangeable. DO NOT
mix MERCONand MERCONV. Refer to your
scheduled maintenance guide to determine the
correct service interval.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
217
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Item Ford part
nameFord part
numberFord
specification
4.6L - Manual
transmission
fluidMotorcraft
MERCON
AT FXT-2–QM
MERCON
Disc brake
caliper railsMotorcraft
Silicone
Brake Caliper
Grease and
Dielectric
CompoundXG-3ESE-M1C171-A
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateZC-32–AWSB-M8B16
–A2
1Add 118 ml (4 oz.) of Additive Friction Modifier
XL-3 or equivalent meeting Ford specification
EST-M2C118-A for complete refill of Traction-Lok
axles.
Ford design rear axles contain a synthetic lubricant
that does not require changing unless the axle has
been submerged in water.
2Ensure the correct automatic transmission fluid is
used. Transmission fluid requirements are indicated
on the dipstick or on the dipstick handle. MERCON
and MERCONV are not interchangeable. DO NOT
mix MERCONand MERCONV. Refer to your
scheduled maintenance guide to determine the
correct service interval.
2004 Mustang(mus)
Owners Guide (post-2002-fmt)
USA English(fus)
Maintenance and Specifications
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