2009 FORD FLEX octane

WARNING:The fuel system may be under pressure. If you hear
a hissing sound near the fuel filler door (Easy Fuel™ “no cap”
fuel system), do not refuel until the sound stops. Otherwise, fuel may
spray out, which could cause serious personal injury.
Choosing the right fuel
Use only UNLEADED fuel or UNLEADED fuel blended with a maximum
of 10% ethanol. Do not use fuel ethanol (E85), diesel, methanol, leaded
fuel or any other 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.
Note:Use of any fuel other than those recommended may cause
powertrain damage, a loss of vehicle performance, and repairs may not
be covered under warranty.
Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with a
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” in
high altitude areas that are sold with octane ratings less than 87.
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 authorized dealer to
prevent any engine damage.
87(R+M)/2 METHOD
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
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Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems, try a different brand of unleaded gasoline. “Premium”
unleaded gasoline is not recommended for vehicles designed to use
“Regular” unleaded gasoline because it may cause these problems to
become more pronounced. If the problems persist, see your authorized
dealer.
Do not add aftermarket fuel additive products to your fuel tank. 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. These products have not been approved for your engine and
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.
Many of the world’s automakers approved the World-Wide Fuel Charter
that recommends gasoline specifications to provide improved
performance and emission control system protection for your vehicle.
Gasolines that meet the World-Wide Fuel Charter should be used when
available. Ask your fuel supplier about gasolines that meet the
World-Wide Fuel Charter.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality, per the recommendations in theChoosing the right
fuelsection.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
effect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from off to on several times after
refueling to allow the fuel system to pump the fuel from the tank to
the engine. On restarting, cranking time will take a few seconds longer
than normal.
•Normally, adding 1 gallon (3.8L) of fuel is enough to restart the
engine. If the vehicle is out of fuel and on a steep grade, more than
1 gallon (3.8L) may be required.
•TheService engine soon
indicator may come on. For more
information on the “service engine soon” indicator, refer toWarning
lights and chimesin theInstrument Clusterchapter.
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
349

4. When done, clean the funnel or properly dispose of it. Extra funnels
can be purchased from your authorized dealer if you choose to dispose
of the funnel.Do notuse aftermarket funnels; they will not work with
the Easy Fuel™ system and can damage it. The included funnel has
been specially designed to work safely with your vehicle.
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 fill-ups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend taking
fuel economy measurements during the first 1,000 miles (1,600 km) of
driving (engine break-in period). You will get a more accurate
measurement after 2,000 miles–3,000 miles (3,000 km–5,000 km).
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 theMaintenance
product specifications and capacitiessection 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 two automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
351

ENGINE DATA
Engine 3.5L DOHC V6 engine
Displacement 3.5L
Required fuel 87 octane
Firing order 1–4–2–5–3–6
Spark plug gap 0.052–0.056 inch (1.32–1.42 mm)
Ignition system Coil on plug
Compression ratio 10.3:1
Engine drivebelt routing
1. Short drivebelt is on first pulley groove closest to engine.
2. Long drivebelt is on second pulley groove farthest from engine.
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Maintenance and Specifications
364

Engine block heater .................253
Engine oil ..................................333
change oil soon warning,
message center .......................333
checking and adding ..............333
dipstick ....................................333
filter, specifications ........335, 361
recommendations ...................335
refill capacities ........................362
specifications ..........................362
Event data recording ....................6
Exhaust fumes ..........................253
F
Fail safe cooling ........................343
Family entertainment system ....34
Fluid capacities .........................362
Foglamps .....................................77
Four-Wheel Drive vehicles
driving off road .......................272
Freezer ........................................92
Fuel ............................................345
calculating fuel
economy ..........................112, 351
cap ...........................................347
capacity ...................................362
choosing the right fuel ...........348
comparisons with EPA fuel
economy estimates .................354
detergent in fuel .....................349
filler funnel .............................349
filling your vehicle with
fuel ...........................345, 347, 351
filter, specifications ........344, 361
improving fuel economy ........351
octane rating ...................348, 364
quality ......................................349
running out of fuel .........307, 349safety information relating to
automotive fuels .....................345
Fuses ..........................................280
G
Gas cap (see Fuel cap) ............347
Gas mileage
(see Fuel economy) .................351
Gauges .........................................14
H
Hazard flashers .........................279
Head restraints .................157, 159
Headlamps ...................................76
aiming ........................................78
autolamp system .......................76
bulb specifications ....................82
daytime running lights .............78
flash to pass ..............................77
high beam .................................77
replacing bulbs .........................83
turning on and off ....................76
Heating
heating and air conditioning
system ...........................64, 67, 70
Homelink wireless control
system ........................................107
Hood ..........................................330
I
Ignition ...............................250, 364
Illuminated visor mirror .............88
Infant seats
(see Safety seats) .....................201
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Index
371

Inspection/maintenance (I/M)
testing ........................................356
Instrument panel
cleaning ...................................326
cluster ........................................10
lighting up panel and
interior .......................................78
J
Jump-starting your vehicle ......307
K
Keyless entry system ...............140
autolock ...................................127
keypad .....................................140
locking and unlocking doors ..141
programming entry code .......140
Keys ...................................125, 143
positions of the ignition .........250
L
Lamps
autolamp system .......................76
bulb replacement
specifications chart ..................82
daytime running light ...............78
fog lamps ...................................77
headlamps .................................76
headlamps, flash to pass ..........77
instrument panel, dimming .....78
interior lamps .....................81, 83
replacing bulbs .........................83
LATCH anchors .........................205
Liftgate ..............................119, 134
Lights, warning and indicator ....10
anti-lock brakes (ABS) ..........256
Load limits .................................239Locks
autolock ...................................127
childproof ................................131
doors ........................................127
Lubricant specifications ...........362
Lug nuts ....................................306
Luggage rack .............................124
Lumbar support, seats .....152, 155
M
Message center .................110–111
english/metric button .............114
system check button ..............113
warning messages ...................116
Mirrors ...................................98–99
automatic dimming rearview
mirror ........................................99
heated ................................70, 100
programmable memory ..........135
side view mirrors (power) .......99
Moon roof ..................................106
Motorcraft parts ........328, 344, 361
N
Navigation system .......................63
O
Octane rating ............................348
Oil (see Engine oil) ..................333
Overdrive ...................................264
P
Parking brake ............................256
Parts (see Motorcraft parts) ....361
2009 Flex(471)
Owners Guide (post-2002-fmt)
USA(fus)
Index
372