fuel type SUBARU OUTBACK 2006 Owners Manual

3-8 Instruments and controls
T Vehicle communication system
fault indication
The vehicle communication system car-
ries various types of information (vehicle
speed, running conditions, etc.) to control
modules. In the event of a fault in this
communication system, th e trip meter will
show “ ”.
If the trip meter shows “ ”, immedi-
ately contact the nearest SUBARU dealer
and have the vehicl e communication sys-
tem inspected.
NOTE If you press the trip knob while the trip
meter is showing “ ”, the trip
meter indication will appear for 10 sec-
onds.
„ TachometerThe tachometer shows the engine speed
in thousands of revolutions per minute. „ Fuel gauge
The fuel gauge shows the approximate
amount of fuel remaining in the tank.
When the ignition switch is in the “LOCK”
or “ACC” position, the fuel gauge shows
“E” even if the fuel tank contains fuel. The gauge may move slightly during brak-
ing, turning or acceleration due to fuel lev-
el movement in the tank.
If you press the trip knob while the ignition
switch is in the “LOCK” position, the fuel
gauge’s dial, needle, and rim will light up
and the needle will indicate the amount of
fuel remaining in the tank.
If, while the fuel gauge needle is indicating
the amount of fuel remaining in the tank,
you (a) do not press the trip knob for 10
seconds or (b) open and close the driver’s
door, the fuel gauge needle will drop to the
“E” position and the dial, needle, and rim
will go off.
The rim of the fuel gauge flashes five
times when the amount of remaining fuel
reaches 2.6 US gal (10 liters, 2.2 lmp gal).
If you turn the ignition switch to theDo not operate the engine with the
pointer of the tachometer in the red
zone. In this range, fuel injection will
be cut by the engine control module
to protect the engine from overrev-
ving. The engine will resume run-
ning normally after the engine
speed is reduced below the red
zone.
300638
300639

3-12 Instruments and controls
T Vehicle communication system
fault indication
The vehicle communication system car-
ries various types of information (vehicle
speed, running conditions, etc.) to control
modules. In the event of a fault in this
communication system, th e trip meter will
show “ ”.
If the trip meter shows “ ”, immediate-
ly contact the nearest SUBARU dealer
and have the vehicl e communication sys-
tem inspected.
NOTE If you press the trip knob while the trip
meter is showing “ ”, the trip meter
indication will appear for 10 seconds.
„ TachometerThe tachometer shows the engine speed
in thousands of revolutions per minute. NOTE (3.0-liter models only) To protect the engine while the “P” or
“N” position is selected, the engine is
controlled such that the engine speed
does not become too high even if the
accelerator pedal is pressed hard. „ Fuel gauge
The fuel gauge shows the approximate
amount of fuel remaining in the tank.
The gauge does not return to “E” even
though the ignition switch is in the “ACC”
or “LOCK” position.
The gauge may move slightly during brak-
ing, turning or acceleration due to fuel lev-
el movement in the tank.
If you press the trip knob while the ignition
switch is in the “LOCK” position, the fuel
gauge’s dial will light up and the needle
will indicate the amount of fuel remaining
in the tank.
If, while the fuel gauge needle is indicating
the amount of fuel remaining in the tank,
you (a) do not press the trip knob for 10
seconds or (b) open and close the driver’sDo not operate the engine with the
pointer of the tachometer in the red
zone. In this range, fuel injection will
be cut by the engine control module
to protect the engine from overrev-
ving. The engine will resume run-
ning normally after the engine
speed is reduced below the red
zone. 300640

7-2 Starting and operating Starting and operating
Fuel
„ Fuel requirementsT 2.5-liter non-turbo models
The 2.5-liter non-turbo engine is designed
to operate using unleaded gasoline with
an octane rating of 87 AKI or higher.
T 2.5-liter turbo models and 3.0-liter
models
The 2.5-liter turbo engine and 3.0-liter en-
gine are designed to operate using premi-
um unleaded gasoline with an octane rat-
ing of 91 AKI or higher. If premium unlead-
ed gasoline is not available, regular un-
leaded gasoline with an octane rating of
87 AKI or higher may be temporarily used.
For optimum engine performance and
driveability, it is required (for 2.5-liter turbo
models), and recommended (for 3.0-liter
models) that you use premium grade un-
leaded gasoline.
NOTE
Be sure to use premium unleaded gas- oline of 91 AKI or higher for a 2.5-liter
turbo engine model. If other gasoline
(lower than 91 AKI) is used, knocking,
reduced output and poor accelerator
response will result.
T Fuel octane rating
This octane rating is the average of the
Research Octane and Motor Octane num-
bers and is commonly referred to as the
Anti Knock Index (AKI).
Using a gasoline with a lower octane rat-
ing can cause persistent and heavy
knocking, which can damage the engine.
Do not be concerned if your vehicle some-
times knocks lightly when you drive up a
hill or when you accelerate. See your
dealer or a qualified service technician if
you use a fuel with the specified octane
rating and your vehicle knocks heavily or
persistently.
T Unleaded gasoline
The neck of the fuel f iller pipe is designed
to accept only an unleaded gasoline filler
nozzle. Under no circumstances should
leaded gasoline be used because it will
damage the emission control system and
may impair driveability and fuel economy.
T California fuel
If your vehicle was certified to California
Emission Standards as indicated on the underhood tune-up label, it is designed to
optimize engine and emission control sys-
tem performance with gasoline that meets
the clean burning low-sulfur California
gasoline specifications. If you live in any
other state than Calif ornia, your vehicle
will operate on gasoline meeting Federal
specifications. Gasoline sold outside Cali-
fornia is permitted to have higher sulfur
levels, which may affect the performance
of your vehicle’s catalytic converter and
may produce a sulfur exhaust odor or
smell. SUBARU recomm ends that you try
a different brand of unleaded gasoline
having lower sulfur to determine if the
problem is fuel related before returning
your vehicle to an authorized dealer for
service. The CHECK ENGINE warning
light/Malfunction indicator lamp may also
turn on. If this occurs, return to your autho-
rized SUBARU dealer for diagnosis. If it is
determined that the condition is caused by
the type of fuel us ed, repairs may not be
covered by your warranty.
T MMT
Some gasoline contains an octane-en-
hancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl). If
you use such fuels, your emission control
system performance may deteriorate and
the CHECK ENGINE warning light/Mal-Use of a fuel which is low in quality
or use of an inappropriate fuel addi-
tive may cause engine damage.

Starting and operating
7-3
– CONTINUED –function indicator lamp may turn on. If this
happens, return to your authorized
SUBARU Dealer for service. If it is deter-
mined that the condition is caused by the
type of fuel used, repairs may not be cov-
ered by your warranty.
T Gasoline for cleaner air
Your use of gasoline with detergent addi-
tives will help prevent deposits from form-
ing in your engine and fuel system. This
helps keep your engine in tune and your
emission control system working properly,
and is a way of doing your part for cleaner
air. If you continuously use a high quality
fuel with the proper detergent and other
additives, you should never need to add
any fuel system cleaning agents to your
fuel tank.
Many gasolines are now blended with ma-
terials called oxygenates. Use of these fu-
els can also help keep the air cleaner. Ox-
ygenated blend fuels, such as MTBE (Me- thyl Tertiary Butyl ether) or ethanol (ethyl
or grain alcohol) may be used in your ve-
hicle, but should contain no more than
15% MTBE or 10% ethanol for the proper
operation of your SUBARU.
In addition, some gasoline suppliers are
now producing reformulated gasolines,
which are designed to reduce vehicle
emissions. SUBARU approves the use of
reformulated gasoline.
If you are not sure what the fuel contains,
you should ask your service station oper-
ators if their gasolines contain detergents
and oxygenates and if they have been re-
formulated to reduce vehicle emissions.
As additional guidance, only use fuels
suited for your vehicle as explained in the
following.
y Fuel should be unleaded and have an
octane rating no lower than that specified
in this manual.
y Methanol (methyl or wood alcohol) is
sometimes mixed with unleaded gasoline.
Methanol can be used in your vehicle
ONLY if it does not exceed 5% of the fuel
mixture AND if it is accompanied by suffi-
cient quantities of the proper cosolvents
and corrosion inhibitors required to pre-
vent damage to the fuel system. Do not
use fuel containing methanol EXCEPT un- der these conditions.
y If undesirable driveability problems are
experienced and you suspect they may be
fuel related, try a di fferent brand of gaso-
line before seeking service at your
SUBARU dealer.
y Fuel system damage or driveability
problems which result from the use of im-
proper fuel are not covered under the
SUBARU Limited Warranty.
Do not let fuel spill on the exterior
surfaces of the vehicle. Fuels con-
taining alcohol may cause paint
damage, which is not covered under
the SUBARU Limited Warranty.

Driving tips
8-9
– CONTINUED –buildup on the suspension, disc brakes
and brake hoses underneath the vehicle.
If there is caked snow or ice, remove it,
being careful not to damage the disc
brakes and brake hoses and ABS har-
ness.
T Refueling in cold weather
To help prevent moisture from forming in
the fuel system and t he risk of its freezing,
use of an antifreeze additive in the fuel
tank is recommended during cold weath-
er.
Use only additives that are specifically de-
signed for this purpose. When an anti-
freeze additive is used, its effect lasts
longer if the tank is refilled whenever the
fuel level reaches half empty.
If your SUBARU is not going to be used for
an extended period, it is best to have the
fuel tank filled to capacity.
„ Driving on snowy and icy
roads To prevent skidding and slipping, avoid
sudden braking, abrupt acceleration, high-
speed driving, and sharp turning when
driving on snowy or icy roads.
Always maintain ample distance between
your vehicle and the vehicle ahead of you
to avoid the need for sudden braking.
To supplement the foot brake, use the en-
gine brake effectively to control the vehi-
cle speed. (Shift into a lower gear when
necessary.)
Avoid shifting down abruptly. Such behav-
ior can cause the wheels to lock, possibly
leading to loss of vehicle control.
An anti-lock brake system (ABS) enhanc-
es your vehicle’s braking performance on
snowy and icy roads. Refer to the “ABS
(Anti-lock Brake System)” and “Vehicle
Dynamics Control system (if equipped)”
section in chapter 7 for information on
braking on slippery surfaces. T Wiper operation when snowing
Before driving in cold weather, make sure
the wiper blades are not frozen to the
windshield or rear window. If the wiper
blades are frozen to the windshield or rear
window, use the defroster with the airflow
control button/dial in the “ ” position
and the temperature control dial set for
maximum warmth until the wiper blades
are completely thawed out. If your vehicle
is equipped with a wiper deicer, it is helpful
to thaw the windshield wiper blades. To
thaw out the rear wiper blade, use the rear
window defogger.
When driving in snow, if frozen snow
starts to stick on th e surface of the wind-
shield despite wiper operation, use the de-
froster with the airflow control button/dial
in “ ” and the temperature control dial
set for maximum warmth. After the wind-
shield gets warmed enough to melt the
frozen snow on it, wash it away using the
windshield washer.
Snow stuck on the wiper arm prevents the
wiper from working effe ctively. If snow is
stuck on the wiper arm, pull off the road to
a safe place, then remove it. If you stop
the vehicle at road side, use the hazard
warning flasher to alert other drivers.
We recommend use of non-freezing typeDo not use the cruise control on
slippery roads such as snowy or icy
roads. This may cause loss of vehi-
cle control. Avoid prolonged continuous driving
in snowstorms. Snow will enter the
engine’s intake system and may
hinder the air flow, which could re-
sult in engine shutdown or even
breakdown.

10-2 Appearance care Appearance care
Exterior care „ Washing
NOTE When having your vehicle washed in
an automatic car wash, make sure be-
forehand that the car wash is of suit-
able type.
The best way to preserve your vehicle’s
beauty is frequent washing. Wash the ve-
hicle at least once a month to avoid con-
tamination by road grime.
Wash dirt off with a wet sponge and plenty
of lukewarm or cold water. Do not wash
the vehicle with hot water and in direct
sunlight.
Salt, chemicals, insects, tar, soot, tree
sap, and bird droppings should be washed
off by using a light detergent, as required.
If you use a light detergent, make certain that it is a neutral detergent. Do not use
strong soap or chemical detergents. All
cleaning agents should be promptly
flushed from the surface and not allowed
to dry there. Rinse the vehicle thoroughly
with plenty of lukewarm water. Wipe the
remaining water off with a chamois or soft
cloth.
T Washing the underbody
Chemicals, salts and gravel used for deic-
ing road surfaces are extremely corrosive,
accelerating the corrosion of underbody
components, such as the exhaust system,
fuel and brake lines, brake cables, floor
pan and fenders, and suspension.
Thoroughly flush the underbody and in-
side of the fenders with lukewarm or cold
water at frequent intervals to reduce the
harmful effects of such agents.
Mud and sand adhering to the underbody
components may accelerate their corro-
sion.
After driving off-road or muddy or sandy
roads, wash the mud and sand off the un-
derbody.
Carefully flush the suspension and axle
parts, as they are particularly prone to
mud and sand buildup. Do not use a
sharp-edged tool to remove caked mud.y When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes, drive
the vehicle at a safe speed while
lightly pressing the brake pedal to
heat up the brakes.
y Do not wash the engine compart-
ment and areas adjacent to it. If
water enters the engine air intake,
electrical parts or the power steer-
ing fluid reservoir, it will cause en-
gine trouble or faulty power steer-
ing respectively. y Since your vehicle is equipped
with a rear wiper, automatic car-
wash brushes could become tan-
gled around it, damaging the wip-
er arm and other components.
Ask the automatic car-wash oper-
ator not to let the brushes touch
the wiper arm or to fix the wiper
arm on the rear window glass with
adhesive tape before operating
the machine. (S tation wagon mod-
els only)

Maintenance and service
11 - 3 5
– CONTINUED –curbs or are subjected to harsh treat-
ment as when the vehicle is driven on a
rough surface, they can suffer damage
that cannot be seen with the naked eye.
This type of damage does not become
evident until time has passed. Try not
to drive over curbs, potholes or on oth-
er rough surfaces. If doing so is un-
avoidable, keep the vehicle’s speed
down to a walking pace or less, and ap-
proach the curbs as squarely as possi-
ble. Also, make sure the tires are not
pressed against the curb when you
park the vehicle.
y If you feel unusual vibration while
driving or find it difficult to steer the ve-
hicle in a straight line, one of the tires
and/or wheels may be damaged. Drive
slowly to the nearest authorized
SUBARU dealer and have the vehicle
inspected.
„ Tire pressures and wearMaintaining the correct tire pressures
helps to maximize the tires’ service lives
and is essential for good running perfor-
mance. Check and, if necessary, adjust
the pressure of each tire (including the
spare) at least once a month (for example,
during a fuel stop) and before any long
journey. Check the tire pressures when the tires
are cold. Use a pressure gauge to adjust
the tire pressures to the values shown on
the tire placard. The tire placard is located
on the door pillar on the driver’s side.
Driving even a short distance warms up
the tires and increases the tire pressures.
Also, the tire pressures are affected by the
outside temperature. It is best to check tire
pressure outdoors before driving the vehi-
cle.
When a tire becomes warm, the air inside
it expands, causing the tire pressure to in-
crease. Be careful no t to mistakenly re-
lease air from a warm tire to reduce its
pressure. NOTE y The air pressure in a tire increases
by approximately 4.3 psi (30 kPa, 0.3
kgf/cm 2
) when the tire becomes warm.
y The tires are considered cold when
the vehicle has been parked for at least
three hours or has been driven less
than one mile (1.6 km).
Incorrect tire pressures detract from con-
trollability and ride comfort, and they
cause the tires to wear abnormally. B00128
Do not let air out of warm tires to ad-
just pressure. Doing so will result in
low tire pressure.

14-8 Index
Rotation ..................................................................... 11-37
Tires ................................................................................. 12-5
Types ......................................................................... 11-33
Tires and wheels ............................................................ 11-33
Top tether anchorages ..................................................... 1-36
Towing .............................................................................. 9-13
All wheels on the ground ............................................. 9-16
Flat-bed truck ............................................................... 9-16
Tie-down hooks ........................................................... 9-13
Weight ......................................................................... 8-21
Trailer
Hitch ............................................................................ 8-18
Hitches ........................................................................ 8-24
Towing ......................................................................... 8-20
Towing tips .................................................................. 8-26
Trip meter .................................................................. 3-7, 3-11
Trunk lid ........................................................................... 2-21
Release handle ........................................................... 2-22
Trunk light ...................................................................... 11-55
Turn signal
Indicator lights ............................................................. 3-24
Lever ........................................................................... 3-32
U
Under-floor storage compartment .................................... 6-16
V
Valet mode ....................................................................... 2-16
Vanity mirror ....................................................................... 6-4
Vehicle
Capacity weight ........................................................... 8-13 Identification ............................................................... 12-10
Vehicle Dynamics Control
OFF indicator light ....................................................... 3-22
OFF switch ................................................................... 7-32
Operation indicator light .......... ..................................... 3-22
System ......................................................................... 7-29
Warning light ................................................................ 3-22
Ventilator ............................................................................ 4-2
W
Warning and indicator lights ............................................. 3-14
Warning lights
ABS ............. ....................................... ............ .............. 3-20
All-Wheel Drive ............................................................ 3-22
Anti-lock Brake System ................................................ 3-20
AT OIL TEMPerature ................................................... 3-18
Brake system ............ ......................... ............ .............. 3-20
Charge ......................................................................... 3-18
CHECK ENGINE ......................................................... 3-17
Door open ................. ......................... ............ .............. 3-22
Low fuel ....................................................... 3-9, 3-13, 3-21
Oil pressure ................................................................. 3-18
Seatbelt ........................................................................ 3-14
SRS airbag system ...... .......................................... ...... 3-16
Vehicle Dynamics Control ................................... 3-22, 7-31
Warranties and maintenance ............................................ 8-20
Washing ............................................................................ 10-2
Waxing and polishing .... ......................... ............ .............. 10-3
Wear indicators ......................... ...................................... 11-37
Wheel
Alignment ..................................................................... 12-5
Balance ...................................................................... 11-37