octane FORD MUSTANG 1999 4.G Owners Manual

If you do not use the proper fuel filler cap,
excessive pressure or vacuum in the fuel
tank may damage the fuel system or cause the fuel
system to work improperly in a collision, which
may result in possible personal injury.
Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel
is prohibited by law and could damage your vehicle.
Do not use fuel containing methanol. It can damage
critical fuel system components.
Your vehicle was not designed to use fuel or fuel
additives with metallic compounds, including
manganese-based compounds containing MMT.
Repairs to correct the effects of using a fuel for
which your vehicle was not designed may not be
covered by your warranty.
Octane recommendations
Your vehicle is
designed to use
ªRegularº unleaded
gasoline with an
(R+M)/2 octane rating of 87. We do not recommend
the use of gasolines labeled as ªRegularº that are
sold with octane ratings of 86 or lower in high
altitude areas.
Do not be concerned if your engine sometimes
knocks lightly. However, if it knocks heavily 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.
Fuel quality
If you are experiencing starting, rough idle or
hesitation driveability problems during a cold start,
try a different brand of ªRegularº unleaded gasoline.
87(R+M)/2 METHOD
Maintenance and care
162

ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel
economy is you, the driver. You must gather
information as accurately and consistently as
possible. Fuel expense, frequency of fillups or fuel
gauge readings are NOT accurate as a measure of
fuel economy. We do not recommend taking fuel
economy measurements during the first 1 600 km
(1 000 miles) of driving (engine break-in period).
You will get a more accurate measurement after
3 000 km±5 000 km (2 000 miles-3 000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your
vehicle is equal to the rated refill capacity of the fuel
tank as listed in theRefill Capacitieschart in this
ªOwner Guide.º The advertised capacity is the
amount of the Indicated Capacity and the Empty
Reserve combined. Indicated Capacity is the
difference in the amount of fuel in a full tank and a
tank when the fuel gauge indicates empty. Empty
Reserve is the small amount of usable fuel remaining
in the fuel tank after the fuel gauge indicates empty.
The amount of Empty Reserve varies and
should not be relied upon to increase driving
range. When refueling your vehicle after the
fuel gauge indicates empty, you might not be
able to refuel the full amount of the advertised
capacity of the fuel tank due to the empty
reserve still present in the tank.
For consistent results when filling the fuel tank:
²Use the same filling rate setting (low Ð medium
Ð high) each time the tank is filled.
²Allow three automatic click-offs when filling.
²Always use fuel with the recommended octane
rating.
Maintenance and care
164

ENGINE DATA
Engine 3.8L OHV V6
engine4.6L SOHC V8
engine
Cubic inches 232 281
Horsepower 190 @
5250 rpm260 @
5250 rpm
Torque 220 lb.-ft. @
2750 rpm302 lb.-ft. @
4000 rpm
Required fuel 87 octane 87 octane
Firing order 1-4-2-5-3-6 1-3-7-2-6-5-4-8
Spark plug gap 1.3-1.4 mm
(0.052-
00.056 inch)1.3-1.4 mm
(0.052-
00.056 inch)
Ignition system EDIS Coil on plug
Compression
ratio9.4:1 9.0:1
VEHICLE DIMENSIONS
Vehicle
dimensionsCoupe mm
(in)Convertible
mm (in)
(1) Overall
length4 653.3 (183.2) 4 653.3 (183.2)
(2) Overall
width1 856.7 (73.1) 1 856.7 (73.1)
(3) Overall
height1 353.8 (53.3)
11 356.4 (53.4)2
(4) Wheelbase 2 573.0 (101.3) 2 573.0 (101.3)
(5) Track -
Front1 534.2 (60.4)31 534.2 (60.4)3
(5) Track -
Rear1 539.2 (60.6)41 539.2 (60.6)4
1
1 358.9 mm (53.5 in) for Mustang GT
21 361.4 mm (53.6 in) for Mustang GT
31 521.5 mm (59.9 in) for Mustang GT
41 526.5 mm (60.1 in) for Mustang GT
Capacities and specifications
188

Fluid capacities ....... 183
Foglamps ................... 53
Fuel .......................... 158
calculating fuel
economy ................ 164
cap ......................... 161
capacity ................. 183
choosing
the right fuel ......... 162
comparisons with
EPA fuel economy
estimates ............... 168
detergent in fuel ... 163
filling your vehicle
with fuel .. 158,161,164
filter,
specifications . 163,182
fuel pump shut-off
switch .................... 112
gauge ....................... 12
improving fuel
economy ................ 164
low fuel
warning light ............. 9
octane rating .. 162,188
quality .................... 162
running
out of fuel ............. 163
safety information
relating to
automotive fuels ... 158
Fuses ................. 113,114
Gas cap
(see Fuel cap) ......... 161
Gas mileage(see
Fuel economy) ........ 164
Gauges .................. 11,12
battery voltage
gauge ....................... 15
engine coolant
temperature gauge . 12engine oil pressure
gauge ....................... 15
fuel gauge ................ 12
odometer ................. 13
speedometer ........... 13
tachometer .............. 14
trip odometer .......... 14
GAWR (Gross Axle
Weight Rating) ........ 106
definition ............... 106
driving with
a heavy load .......... 106
location .................. 106
GVWR (Gross Vehicle
Weight Rating) ........ 106
calculating ............. 106
definition ............... 106
driving with
a heavy load .......... 106
location .................. 106
Hazard flashers ....... 112
Head restraints ......... 64
Headlamps ................. 16
aiming ............. 175,176
bulb
specifications ........ 175
daytime
running lights .......... 16
flash to pass ............ 45
high beam ............ 7,45
turning on and off .. 16
warning chime ........ 11
Heating ...................... 18
heating and air
conditioning
system ..................... 18
Hood ........................ 132
Ignition ..................... 188
positions of the
ignition .................... 45
removing the key .. 105
Index
209

Infant seats
(see Safety seats) ..... 81
Inspection/maintenance
(I/M) testing ............ 169
Instrument panel ........ 6
cleaning ................. 180
lighting up panel
and interior ............. 17
location of
components ............... 6
Jump-starting your
vehicle ...................... 123
Keys
key in ignition
chime ....................... 11
positions of the
ignition .................... 45
removing from the
ignition .................. 105
Lamps
cargo lamps ............. 17
daytime
running light ........... 16
fog lamps ................. 53
headlamps ........ 16,171
headlamps,
flash to pass ............ 45
instrument panel,
dimming ................... 17
interior lamps ......... 50
174,175
replacing
bulbs ............... 170,171
172,173,174
Lane change indicator
(see Turn signal) ...... 44
Lights, warning and
indicator ...................... 6
air bag ........................ 7
anti-lock brakes
(ABS) ................. 10,93
anti-theft ................... 7brake ........................ 10
charging system ........ 7
check coolant .......... 10
high beam ................. 7
low fuel ...................... 9
overdrive off .............. 9
safety belt ................. 7
service engine soon .. 8
traction
control active .......... 10
turn signal
indicator .................... 6
Load limits ............... 106
GAWR .................... 106
GVWR .................... 106
trailer towing ........ 106
Locks
doors ........................ 51
Lubricant
specifications .... 185,188
Lumbar support,
seats ........................... 66
Manual
transmission ............ 102
fluid capacities ...... 183
lubricant
specifications ........ 188
reverse ................... 104
Mirrors
side view mirrors
(power) ................... 51
Motorcraft
parts .................. 163,182
Octane rating .......... 162
Odometer ................... 13
Panic alarm feature,
remote entry
system ........................ 58
Parking brake ............ 94
Parts (see
Motorcraft parts) .... 182
Index
210

Item Information
Required fuel Unleaded fuel only -
87 octane
Fuel tank capacity 58.7L (15.5 gallons)
Engine oil capacity
(includes filter change)4.7L (5.0 quarts). Use
Motorcraft 5W30 Super
Premium Motor Oil,
Ford specification
WSS-M2C153-G
Tire size and pressure Refer to the
Certification Label.
Hood release Pull handle under the
left side of the
instrument panel.
Coolant capacity-3.8L
OHV V6 engine
111.2L (11.8 quarts)
Coolant capacity-4.6L
SOHC V8 engine
113.3L (14.1 quarts)
Power steering fluid
capacityFill to line on reservoir
or dipstick. Use
Motorcraft MERCONt
AT F.
Manual transmission
fluid capacity-3.8L OHV
V6 engine2.6L (5.6 pints). Use
Motorcraft MERCONt
AT F.
Manual transmission
fluid capacity-4.6L
SOHC V8 engine
2
3.1L (6.6 pints). Use
Motorcraft MERCONt
AT F.
Automatic transmission
fluid capacity-3.8L OHV
V6 engine
3
13.1L (13.9 quarts). Use
Motorcraft MERCONtV
AT F.
Automatic transmission
fluid capacity-4.6L
SOHC V8 engine
3
12.0L (12.8 quarts). Use
Motorcraft MERCONtV
AT F.
Filling station information
215