2012 SUBARU LEGACY engine coolant

Engine overheating
WARNING
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has fully cooled down.
When the engine is hot, the coolant
is under pressure. Removing the
cap while the engine is still hot
could release a spray of boiling hot
coolant, which could burn you very
seriously.
If the engine overheats, pull off the road
safely and stop the vehicle in a safe place. & If steam is coming from the
engine compartment
Turn off the engine and get everyone
away from the vehicle until it cools down. & If no steam is coming from
the engine compartment
NOTE
For details about how to check the
coolant level or how to add coolant,
refer to “Engine coolant ”F 11-17.
1. Keep the engine running at idlingspeed. 2. Open the hood to ventilate the engine
compartment. Refer to
“Engine hood ”
F 11-7.
Confirm that the cooling fan is turning. If
the fan is not turning, immediately turn off
the engine and contact your authorized
dealer for repair.
3. After the engine coolant temperature
has dropped, turn off the engine.
If the coolant temperature high warning
light illuminates, turn off the engine. Referto “Coolant temperature low indicator light/
Coolant temperature high warning light ”
F 3-13.
4. After the engine has fully cooled down,
check the coolant level in the reserve tank.
If the coolant level is below the “LOW ”
mark, add coolant up to the “FULL ”mark.
5. If there is no coolant in the reserve
tank, add coolant to the reserve tank.
Then remove the radiator cap and fill the
radiator with coolant.
If you remove the radiator cap from a hot
radiator, first wrap a thick cloth around the
radiator cap, then turn the cap counter-
clockwise slowly without pressing down
until it stops. Release the pressure from
the radiator. After the pressure has been
fully released, remove the cap by pressing
down and turning it. TowingWARNING
Never tow AWD vehicles (including
AT, MT and CVT) with the front
wheels raised off the ground while
the rear wheels are on the ground,
or with the rear wheels raised off the
ground while the front wheels are on
the ground. This will cause the
vehicle to spin away due to the
operation or deterioration of the
center differential.
If towing is necessary, it is best done by
your SUBARU dealer or a commercial
towing service. Observe the following
procedures for safety. In case of emergency
9-13
– CONTINUED –

Maintenance schedule....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine compartment .................................................... 11-4
When checking or servicing in the engine compartment (2.5 L non-turbo models) .. ........... 11-4
When checking or servicing in the engine compartment while the engine is running .......... 11-5
Maintenance tips ................................................ 11-5
Removing and reinstalling clips .......................... 11-5
Removing air intake duct .................................... 11-7
Pulling off the fender lining ................................ 11-7
Engine hood ....................................................... 11-7
Engine compartment overview .......................... 11-9
2.5 L non-turbo models ...................................... 11-9
2.5 L turbo models ........................................... 11-10
3.6 L models .................................................... 11-11
Engine oil .......................................................... 11-12
Checking the oil level ....................................... 11-12
Changing the oil and oil filter ............................ 11-14
Recommended grade and viscosity .................. 11-16
Synthetic oil ..................................................... 11-16
Cooling system ................................................ 11-16
Cooling fan, hose and connections ................... 11-17
Engine coolant ................................................. 11-17
Air cleaner element .......................................... 11-18
Replacing the air cleaner element ..................... 11-18
Spark plugs ...................................................... 11-20
Recommended spark plugs .............................. 11-20
Drive belts ........................................................ 11-21 Manual transmission oil
.................................. 11-21
Recommended grade and viscosity .................. 11-21
Automatic transmission fluid .......................... 11-21
Checking the fluid level .................................... 11-21
Recommended fluid ......................................... 11-22
Continuously variable transmission fluid ...... 11-23
Front differential gear oil (AT and CVT models) .......................................................... 11-23
Checking the oil level ...................................... 11-23
Recommended grade and viscosity .................. 11-24
Rear differential gear oil .................................. 11-24
Recommended grade and viscosity .................. 11-24
Power steering fluid ........................................ 11-24
Checking the fluid level .................................... 11-24
Recommended fluid ......................................... 11-25
Brake fluid ........................................................ 11-25
Checking the fluid level .................................... 11-25
Recommended brake fluid ............................... 11-26
Clutch fluid (MT models) ................................. 11-26
Checking the fluid level .................................... 11-26
Recommended clutch fluid ............................... 11-27
Brake booster .................................................. 11-27
Brake pedal ...................................................... 11-28
Checking the brake pedal free play .................. 11-28
Checking the brake pedal reserve distance....... 11-28
Clutch pedal (MT models) ............................... 11-29
Checking the clutch function ............................ 11-29
Checking the clutch pedal free play .................. 11-29
Replacement of brake pad and lining ............ 11-29
Breaking-in of new brake pads and linings ....... 11-30 Maintenance and service
11

11-4Maintenance and service
guard against getting oil or fluids
in your eyes. If something does
get in your eyes, thoroughly
wash them out with clean water.
. Do not tamper with the wiring of
the SRS airbag system or seat-
belt pretensioner system, or at-
tempt to take its connectors
apart, as that may activate the
system or it can render it inop-
erative. NEVER use a circuit
tester for these wiring. If your
SRS airbag or seatbelt preten-
sioner needs service, consult
your nearest SUBARU dealer. &
Before checking or servicing
in the engine compartment
WARNING
. Always stop the engine and apply
the parking brake to prevent the
vehicle from moving.
. Always let the engine cool down.
Engine parts become very hot
when the engine is running and
remain hot for some time after
the engine is stopped.
. Do not spill engine oil, engine
coolant, brake fluid or any other
fluid on hot engine components.
This may cause a fire.
. Always remove the key from the
ignition switch. When the ignition
switch is in the “ON ”position,
thecoolingfanmayoperate
suddenly even when the engine
is stopped.
. Before performing any servicing
on a vehicle equipped with a
remote engine start system tem-
porarily place that system in the
service mode to prevent it from
unexpectedly starting the engine. &
When checking or servicing
in the engine compartment
(2.5 L non-turbo models)
CAUTION
Do not contact the belt cover while
checking the components in the
engine compartment. Doing so may
cause your hand to slip off the belt
cover and result in an unexpected
injury.

Engine compartment overview &2.5 L non-turbo models1) Power steering fluid reservoir
(page 11-24)
2) Clutch fluid reservoir (page 11-26)
3) Brake fluid reservoir (page 11-25)
4) Fuse box (page 11-44)
5) Battery (page 11-43)
6) Windshield washer tank (page 11-37)
7) Engine oil filler cap (page 11-12)
8) Engine coolant reservoir (page 11-17)
9) Radiator cap (page 11-17)
10) Engine oil level gauge (page 11-12)
11) Air cleaner case (page 11-18) Maintenance and service
11-9
– CONTINUED –

11-10Maintenance and service
& 2.5 L turbo models
1) Power steering fluid reservoir
(page 11-24)
2) Clutch fluid reservoir (page 11-26)
3) Brake fluid reservoir (page 11-25)
4) Fuse box (page 11-44)
5) Battery (page 11-43)
6) Windshield washer tank (page 11-37)
7) Engine oil filler cap (page 11-12)
8) Engine coolant reservoir (page 11-17)
9) Radiator cap (page 11-17)
10) Engine oil level gauge (page 11-12)
11) Air cleaner case (page 11-18)

&3.6 L models1) Power steering fluid reservoir
(page 11-24)
2) Differential gear oil level gauge (page 11-23)
3) Automatic transmission fluid level gauge (page 11-21)
4) Brake fluid reservoir (page 11-25)
5) Fuse box (page 11-44)
6) Battery (page 11-43)
7) Windshield washer tank (page 11-37)
8) Engine oil filler cap (page 11-12)
9) Engine coolant reservoir (page 11-17)
10) Radiator cap (page 11-17)
11) Engine oil level gauge (page 11-12)
12) Air cleaner case (page 11-18) Maintenance and service
11-11

11-16Maintenance and service
12. Start the engine and make sure that no
oil leaks appear around the filter ’s rubber
seal and drain plug.
13. Keep the engine idling until the engine
reaches the normal operating temperature
range, as indicated by the temperature
gauge on the combination meter. After
that, check the engine oil level again. For
further details about the check procedure,
refer to “Checking the oil level ”F 11-12.
& Recommended grade and viscosity
CAUTION
Use only engine oil with the recom-
mended grade and viscosity.
Refer to “Engine oil ”F 12-4.
NOTE
Engine oil viscosity (thickness) affects
fuel economy. Oils of lower viscosity
provide better fuel economy. However,
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 isremoved.
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 off 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 illuminates, the cooling fan
circuit may be defective. Check the fuse
and replace it if necessary. Refer to“ Fuses ”F 11-44 and “Fuses and circuits ”
F 12-10. 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
the cooling system and connections be
checked for leaks, damage, or looseness. &
Engine coolant
! Checking the coolant level
Check the coolant level at each fuel stop.
1. Check the coolant level on the outside
of the reservoir while the engine is cool.
2. If the level is close to or lower than the “LOW ”level mark, add coolant up to the
“ FULL ”level mark. If the reserve tank is
empty, remove the radiator cap and refill
as required.
3. After refilling the reserve tank and the
radiator, reinstall the caps and check that
the rubber gaskets inside the radiator cap
are in the proper position.
CAUTION
. Be careful not to spill engine
coolant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine coolant gets on
the exhaust pipe, be sure to wipe
it off.
. Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
! Changing the coolant
It may be difficult to change the coolant.
Have the coolant changed by your
SUBARU dealer if necessary.
The coolant should be changed according
to the maintenance schedule in the“ Warranty and Maintenance Booklet ”.
Maintenance and service
11-17