2005 FORD THUNDERBIRD octane

Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based additives. Studies indicate that
these additives can cause your vehicle’s emission control system to
deteriorate more rapidly. In Canada, premium grade fuel generally
contains more metallic additives than regular fuel. We recommend using
regular grade fuel. In Canada, many fuels contain metallic additives, but
fuels free of such additives may be available; check with your local fuel
dealer.
Do not use fuel containing methanol. It can damage critical fuel system
components.
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
“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.
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“Premium”
unleaded gasoline. If the problems persist, see your dealer or a qualified
service technician.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
91(R+M)/2 METHOD
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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 capacities
section of this chapter.
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 fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the 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:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low—medium—high) each time
the tank is filled.
•Allow no more than 2 automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in miles or kilometers).
2. Each time you fill the tank, record the amount of fuel added (in
gallons or liters).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
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Maintenance and Specifications
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Item Ford part
nameFord part
numberFord
specification
Rear Axle
LubricantMotorcraft SAE
75W-90 Fuel
Efficient High
Performance
Synthetic Rear
Axle Lubricant
2
XY-75W90-QFEHP
Automatic
transmission
fluidMotorcraft
MERCONV
AT F
3
XT-5-QM MERCONV
Windshield
washer fluidMotorcraft
Premium
Windshield
Washer
ConcentrateZC-32-A WSB-M8B16–A2
1Use only brake fluids certified to meet Ford specifications. DOT 3 fluid
is recommended. However, if DOT 3 is not available, DOT 4 fluid can be
used.
2Ford design rear axles contain a synthetic lubricant that does not
require changing unless the axle has been submerged in water.
3Ensure the correct automatic transmission fluid is used. MERCONand
MERCONV are not interchangeable. DO NOT MIX MERCONand
MERCONV. Refer to theScheduled Maintenance Guideto determine
the correct service interval.
ENGINE DATA
Engine 3.9L-4V V8 engine
Displacement 241 cid (3 949 cc)
Required fuel 91 octane
Firing order 1-5-4-2-6-3-7-8
Ignition system Coil on plug
Spark plug gap 0.040–0.044 inch (1.1–1.2mm)
Compression ratio 10.75:1
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Engine oil ..................................185
checking and adding ..............185
dipstick ....................................185
filter, specifications ........187, 209
recommendations ...................187
refill capacities ........................210
specifications ..................212–213
Exhaust fumes ..........................139
F
Fail safe cooling ........................195
Floor mats ...................................61
Fluid capacities .........................210
Fuel ............................................196
calculating fuel economy .......200
cap ...........................................198
capacity ...................................210
choosing the right fuel ...........199
comparisons with EPA fuel
economy estimates .................203
detergent in fuel .....................200
filling your vehicle with
fuel ...........................196, 198, 201
filter, specifications ........200, 209
improving fuel economy ........200
octane rating ...........199, 213–214
quality ......................................199
running out of fuel .................200
safety information relating to
automotive fuels .....................196
Fuses ..................................151–152
G
Garage Door Opener
(see Homelink wireless control
system) ........................................46Gas cap (see Fuel cap) ............198
Gas mileage
(see Fuel economy) .................200
Gauges .........................................14
H
Hazard flashers .........................150
Head restraints ...........................74
Headlamps ...................................27
aiming ........................................29
autolamp system .......................27
bulb specifications ....................31
daytime running lights .............27
flash to pass ..............................28
replacing bulbs .........................32
turning on and off ....................27
Heating
heating and air conditioning
system .......................................22
Homelink wireless control
system ..........................................46
Hood ..........................................183
I
Ignition .......................136, 213–214
Infant seats
(see Safety seats) .....................100
Inspection/maintenance (I/M)
testing ........................................205
Instrument panel
cleaning ...................................179
cluster ........................................10
lighting up panel and
interior .......................................28
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J
Jack ............................................114
positioning ...............................114
storage .....................................114
Jump-starting your vehicle ......160
K
Keyless entry system
autolock .....................................69
Keys
positions of the ignition .........136
L
Lamps
autolamp system .......................27
bulb replacement
specifications chart ..................31
daytime running light ...............27
headlamps .................................27
headlamps, flash to pass ..........28
instrument panel, dimming .....28
interior lamps .....................30–31
replacing bulbs ....... 31–32, 34–37
Lane change indicator
(see Turn signal) ........................30
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........140
Load limits .................................130
Locks
autolock .....................................69
doors ..........................................62
Lubricant specifications ...212–213
Lug nuts ....................................120
Lumbar support, seats ...............75M
Manual transmission
fluid capacities ........................210
lubricant specifications ..........213
Master lighting switch ................27
Mirrors .........................................41
side view mirrors (power) .......41
Motorcraft parts ................200, 209
O
Octane rating ............................199
Oil (see Engine oil) ..................185
P
Parking brake ............................141
Parts (see Motorcraft parts) ....209
Power distribution box
(see Fuses) .......................155, 158
Power door locks ........................62
Power mirrors .............................41
Power point .................................39
Power steering ..................142–143
fluid, checking and adding ....206
fluid, refill capacity ................210
fluid, specifications .........212–213
Power Windows ...........................40
R
Radio ............................................16
Rear window defroster ...............25
Relays ........................................151
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