2003 FORD MUSTANG SVT Supplement Manual

DRIVETRAIN
Item Description
Rear axle8.8 inch limited-slip differential with
Independent Rear Suspension
DriveshaftAluminum with hardened yoke
TransmissionT56 6-speed manual with integral
clutch housing
Gear ratiosGear Ratio
1st 2.66
2nd 1.78
3rd 1.30
4th 1.00
5th 0.80
6th .63
Reverse 2.90
Drivetrain
9

WHEELS AND TIRES
TiresP275/40ZR17 Goodyear
Eagle F1 performance tire
WheelsSVT-Signature style, 17 in x
9.0 in aluminum 5-spoke
wheel, 26 mm offset
SUSPENSION
•Retuned Independent Rear Suspension (IRS) with
improved geometry and unique bushing rates
•Limited slip axle
•29 mm tubular front stabilizer bar
•26 mm tubular rear stabilizer bar
•Retuned front control arm bushing rates
•Bilstein Montotube shocks and struts
Spring rates:
•600 lb/in front and rear (coupe)
•500 lb/in front and 470 lb/in rear (convertible)
Chassis
10

4–WAY HEAD RESTRAINTS
Your vehicle’s seats are equipped with four-way
adjustable head restraints. The purpose of these
head restraints is to help limit head motion in the
event of a rear collision. To properly adjust your
head restraints, lift the head restraint so that it is
located directly behind your head or as close to that
position as possible. Refer to the following to raise
and lower the head restraints.
The head restraints can
be moved in four
directions:
•up and down
•forward or backward
POWER LUMBAR, ADJUSTABLE BOLSTERS
AND SEAT ADJUSTMENT
Your driver seat is
equipped with 6 way
power seat adjustment,
power lumbar and power
adjustable bolster
controls. These features
allow the driver to adjust
the seat location, the
amount of lumbar
support and the fit of
the seat.
Seating and energy management
11

Lumbar and adjustable bolster controls
The lumbar and adjustable bolster controls are
located on the front right corner of the driver seat.
The power lumbar feature creates lower back
support for the driver and may be adjusted to
increase or decrease the support. The seat back and
seat cushion bolsters inflate or deflate, allowing the
driver to create a firmer or more loose fitting seat.
Before adjusting these features, ensure that the seat
is in the driving position, then:
1. Seat back bolsters—Press
to deflate
(decrease firmness), press
to inflate (increase
firmness).
2. Seat cushion bolsters—Press
to deflate
(decrease firmness), press
to inflate (increase
firmness).
3. Lumbar controls—Press
to inflate (increase
lumbar support), or
to deflate (decrease lumbar
support.)
For maximum ease of vehicle ingress/egress, the seat
cushion and seat back bolsters should be completely
deflated.
Seating and energy management
12

ENERGY MANAGEMENT FEATURE
•This vehicle has a seat belt system with an energy
management feature at the front outboard seating
positions to help further reduce the risk of injury
in the event of a head-on collision.
•This seat belt system has a retractor assembly
that is designed to pay out webbing in a
controlled manner. This feature is designed to
help reduce the belt force acting on the
occupant’s chest.
After any vehicle collision, the seat belt
system at all outboard seating positions
(except driver, which has no“automatic locking
retractor”feature) must be checked by a qualified
technician to verify that the“automatic locking
retractor”feature for child seats is still functioning
properly. In addition, all seat belts should be
checked for proper function.
BELT AND RETRACTOR ASSEMBLY MUST
BE REPLACED if the seat belt assembly
“automatic locking retractor”feature or any other
seat belt function is not operating properly when
checked.
Failure to replace the Belt and Retractor
assembly could increase the risk of injury in
collisions.
Seating and energy management
13

MOTORCRAFT PART NUMBERS
Component 4.6L DOHC Supercharged
V8 engine
Air filter element FA-1632
Fuel filter FG-800A
Battery BXT-59
Oil filter FL-820S
PCV valve EV-153
Spark plugs* AGSF-12FM1
* Refer to Vehicle Emissions Control Information
(VECI) decal for spark plug gap information.
REFILL CAPACITIES
Fluid Ford Part Name Capacity
Brake fluid Motorcraft High
Performance DOT
3 Motor Vehicle
Brake FluidFill to line on
reservoir
Engine oil
(includes filter
change)Motorcraft SAE
5W-20 Super
Premium Motor
Oil5.7L (6.0 quarts)
Engine coolant
1Motorcraft
Premium Engine
Coolant
(green-colored) or
Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)15.2L (16.1
quarts)
Power steering
fluidMotorcraft
MERCONAT FFill to between
MIN and MAX
lines on reservoir
Rear axle lubricant
2Motorcraft SAE
75W-140 High
Performance
Synthetic Rear
Axle Lubricant1.4L (2.9 pints)
Fuel tank N/A 59.4L (15.7
gallons)
Maintenance
14

Fluid Ford Part Name Capacity
Intercooler coolant Motorcraft
Premium Engine
Coolant
(green-colored) or
Motorcraft
Premium Gold
Engine Coolant
(yellow-colored)3.75L (3.96 qts)
Transmission fluid
3Refer to the label
on your
transmission3.9L (8.2 pints)4
Windshield washer
fluidUltra-Clear
Windshield Washer
Concentrate3.8L (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 C8AZ-19B546-A or equivalent
meeting Ford specification EST-M2C118–A for
complete refill of Traction-Lok axles.
3The TTC T56 6 Speed transmission on your SVT
Mustang Cobra uses automatic transmission fluid.
Ensure the correct automatic transmission fluid is
used as indicated in the label on your transmission.
4Service refill capacity is determined by filling the
transmission to the bottom of the filler hole with the
vehicle on a level surface.
Maintenance
15

OCTANE RECOMMENDATIONS
Your vehicle is designed
to use“Premium”
unleaded gasoline with
an (R+M)/2 octane
rating of 91 or higher for optimum performance. The
use of gasolines with lower octane ratings may
degrade performance. We do not recommend the
use of gasolines labeled as“Premium”in high
altitude areas that are sold with octane ratings of
less than 91.
If your engine knocks under most driving conditions
while you are using fuel with the recommended
octane rating, see your dealer or a qualified service
technician to prevent any engine damage.
CHECKING ENGINE COOLANT
The concentration and level of engine coolant should
be checked at the mileage intervals listed in the
scheduled maintenance guide. The coolant
concentration should be maintained at 50/50 coolant
and water, which equates to a freeze point of -36°C
(-34°F). Coolant concentration testing is possible
with a hydrometer or antifreeze tester (such as the
Rotunda Battery and Antifreeze Tester,
0014–R1060). The level of coolant should be
maintained at the“cold full”of“cold fill range”level
in the coolant reservoir. If the level falls below, add
coolant per the instructions in theAdding Engine
Coolantsection.
Your vehicle was factory-filled with a 50/50 engine
coolant and water concentration. If the
concentration of coolant falls below 40% or above
60%, the engine parts could become damaged or not
work properly.A50–50 mixture of coolant and
water provides the following:
•freeze protection down to -36°C (-34°F).
•boiling protection up to 129°C (265°F).
•protection against rust and other forms of
corrosion.
91(R+M)/2 METHOD
Maintenance
16