Page 543 of 634

Maintenance and service/Cooling system
in hot weather, oil of higher viscosity is
required to properly lubricate the en-
gine.
&Synthetic oil
You should use synthetic engine oil that
meets the same requirements given for
conventional engine oil. When using
synthetic oil, you must use oil of the same
classification, viscosity and grade shown
in this Owner ’s Manual. Refer to “Engine
oil ”F 12-4. Also, you must follow the oil
and filter changing intervals shown in the
Warranty and Maintenance booklet.
NOTE
Synthetic oil of the grade and viscosity
noted in chapter 12 is the recom-
mended engine oil for optimum engine
performance. Conventional oil may be
used if synthetic oil is unavailable.
Cooling system
WARNING
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down
completely. Since the coolant is
under pressure, you may suffer
serious burns from a spray of boil-
ing hot coolant when the cap is
removed.
CAUTION
. Vehicles are filled at the factory
with SUBARU Super Coolant that
does not require the first change
for 11 years/137,500 miles (11
years/220,000 km). This coolant
should not be mixed with any
other brand or type of coolant
during this period. Mixing with a
different coolant will reduce the
life of the coolant. Should it be
necessary to top up the coolant
for any reason, use only
SUBARU Super Coolant.
If the SUBARU Super Coolant is
diluted with another brand or type, the maintenance interval is
shortened to that of the mixing
coolant.
. Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
& Cooling fan, hose and con-
nections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
If the radiator cooling fan does not operate
even when the coolant temperature high
warning light blinks or illuminates in RED,
the cooling fan circuit may be defective.
Refer to “Coolant temperature low indica-
tor light/Coolant temperature high warning
light ”F 3-17.
Check the fuse and replace it if necessary.
Refer to “Fuses”F 11-37 and “Fuses and
circuits ”F 12-12.
If the fuse is not blown, have the cooling
system checked by your SUBARU dealer.
If frequent addition of coolant is neces-
sary, there may be a leak in the engine
cooling system. It is recommended that
11-12
Page 561 of 634

Maintenance and service/Aluminum wheels
&Wheel replacement
When replacing wheels due, for example,
to damage, make sure the replacement
wheels match the specifications of the
wheels that are fitted as standard equip-
ment. Replacement wheels are available
from SUBARU dealers.
WARNING
Use only those wheels that are
specified for your vehicle. Wheels
not meeting specifications could
interfere with brake caliper opera-
tion and may cause the tires to rub
against the wheel well housing dur-
ing turns. The resulting loss of
vehicle control could lead to an
accident.
NOTE
When any of the wheels are removed
and replaced for tire rotation or to
change a flat tire, always check the
tightness of the wheel nuts after driv-
ing approximately 600 miles (1,000 km).
If any nut is loose, tighten it to the
specified torque.
Aluminum wheels
Aluminum wheels can be scratched and
damaged easily. Handle them carefully to
maintain their appearance, performance,
and safety.
. When any of the wheels are removed
and replaced for tire rotation or to change
a flat tire, always check the tightness of
the wheel nuts after driving approximately
600 miles (1,000 km). If any nut is loose,
tighten it to the specified torque.
. Never apply oil to the threaded parts,
wheel nuts, or tapered surface of the
wheel.
. Never let the wheel rub against sharp
protrusions or curbs.
. When wheel nuts, balance weights, or
the center cap is replaced, be sure to
replace them with genuine SUBARU parts
designed for aluminum wheels.
Windshield washer fluid
CAUTION
Never use engine coolant as washer
fluid because it could cause paint
damage.
Windshield washer fluid warning light
(type A)
11-30
Page 584 of 634

!Alternative engine oil
If the SUBARU approved oil is unavailable, the following alternative oil can be used.
NOTEEach quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on the
temperature and other factors.
!Non-turbo models
Oil grade SAE viscosity No. and
applicable temperature Engine oil capacity
API (American Petroleum Insti-
tute) classification SN with the
words
“
RESOURCE CONSERVING ”orILSAC GF-5, which can be
identified with the ILSAC certifi-
cation mark (Starburst mark) 0W-20 synthetic
oil is the required oil
for optimum engine performance and
protection. Conventional oil may be
used if synthetic oil is unavailable.
*: If 0W-20 synthetic oil is not available,
5W-30 or 5W-40 conventional oil may
be used if replenishment is needed but
should be changed to 0W-20 synthetic
oil at the next oil change.
– Adding the oil from low level to
full level:
1.1 US qt (1.0 liter, 0.9 Imp qt)
– Changing the oil and oil filter:
5.1 US qt (4.8 liters, 4.2 Imp qt)
Specifications/Specifications
–CONTINUED –
12-5
Page 585 of 634
Specifications/Specifications
!Turbo models
Oil grade SAE viscosity No. and
applicable temperature Oil capacity
API (American Petroleum Insti-
tute) classification SN with the
words
“
RESOURCE CONSERVING ”orILSAC GF-5, which can be
identified with the ILSAC certifi-
cation mark (Starburst mark) 5W-30 synthetic
oil is required for
optimum engine performance and pro-
tection. Conventional oil may be used if
synthetic oil is unavailable.
*: If 5W-30 synthetic oil is not available,
5W-30 or 5W-40 conventional oil may
be used if replenishment is needed but
should be changed to 5W-30 synthetic
oil at the next oil change.
– Adding the oil from L to F level:
1.1 US qt (1.0 liter, 0.9 Imp qt)
– Changing the oil and oil filter:
5.4 US qt (5.1 liters, 4.5 Imp qt)
12-6
Page 633 of 634

GAS STATION REFERENCE
&
Fuel:
! Non-turbo models
Use only unleaded gasoline with an octane rating of 87 AKI
(90 RON) or higher .
! Turbo models
Unleaded gasoline with an octane rating of 93 AKI (98 RON)
or higher is recommended. Unleaded gasoline with an octane
rating of 91 AKI (95 RON) or higher may be used with no
detriment to engine durability or driveability. However, you may
notice a slight decrease in maximum engine performance while
using 91 AKI (95 RON) fuel. If unleaded gasoline with an octane
rating of 91 AKI (95 RON) is not available, refer to “Fuel
requirements ”F 7-3.
&Fuel octane rating:
! RON
This octane rating is the Research Octane Number.
! AKI
This octane rating is the average of the Research Octane and
Motor Octane numbers and is commonly referred to as the Anti
Knock Index (AKI).
&Fuel capacity:
15.9 US gal (60 liters, 13.2 Imp gal)
&Engine oil:
Use only the following oils.
. API classification SN with the words “RESOURCE CON-
SERVING ”
. or ILSAC GF-5, which can be identified with the ILSAC
certification mark (Starburst mark)
For the complete viscosity requirements, refer to “Engine oil”
F 12-4.
&Engine oil capacity:
Non-turbo models: 5.1 US qt (4.8 liters, 4.2 Imp qt)
Turbo models: 5.4 US qt (5.1 liters, 4.5 Imp qt)
The indicated oil quantity is only a guideline and is estimated
based on a case when the engine oil is changed with an oil
filter. After refilling the engine with oil, the oil level should be
checked using the oil level gauge. For more details about
maintenance and service, refer to “Engine oil”F 11-10.
&Cold tire pressure:
Refer to “Tires ”F 12-10.