2012 SUBARU IMPREZA WRX oil temperature

11-10Maintenance and service
thin coat of engine oil to the seal.
9. Clean the rubber seal seating area of
the bottom of engine and install the oil
filter by hand turning. Be careful not to
twist or damage the seal.
10. Tighten the oil filter by the amount
indicated in the following table after the
seal makes contact with the bottom ofengine.
Oil filter color Part number Amount of
rotation
Black 15208AA100 1 rotation
Blue 15208AA12A 7/8
rotation
CAUTION
. Never over tighten the oil filter
because that can result in an oil leak.
. Thoroughly wipe off any engine
oil that has spilled over the
exhaust pipe and/or under-cover.
If spilled oil is not promptly
wiped up, the oil could cause afire.
11. Reinstall under cover.
12. Pour engine oil through the filler neck.
For the oil capacity (guideline), refer to “
Engine oil ”F 12-5.
The oil quantity indicated above is onlyguideline.
The necessary quantity of oil depends on
the quantity of oil that has been drained.
The quantity of drained oil differs slightly
depending on the temperature of the oil
and the time the oil is left flowing out. After
refilling the engine with oil, therefore, you
must use the level gauge to confirm that
the level is correct.
13. Start the engine and make sure that no
oil leaks appear around the filter ’s rubber
seal and drain plug.
14. Run the engine until it reaches the
normal operating temperature. Then stop
the engine and wait a few minutes to allow
the oil drain back. Check the oil level
again and if necessary, add more engineoil.
CAUTION
Be careful not to spill engine oil
when adding it. If oil touches the
exhaust pipe, it may cause a bad
smell, smoke, and/or a fire. &
Recommended grade and viscosity
CAUTION
Use only engine oil with the recom-
mended grade and viscosity.
Refer to “Engine oil ”F 12-5.
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 12-5. 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 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 mixingcoolant.
. 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 engine coolant tempera-
ture gauge exceeds the normal operating
range, the cooling fan circuit may be
defective. Refer to “Temperature gauge ”
F 3-10.
Check the fuse and replace it if necessary.
Refer to “Fuses ”F 11-37 and “Fuse panel
located in the engine compartment ”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
the cooling system and connections be
checked for leaks, damage, or looseness. Maintenance and service
11-11
– CONTINUED –

Power steering fluid &Checking the fluid level
The power steering fluid expands greatly
as its temperature rises; the fluid level
differs according to fluid temperature.
Therefore, the reservoir tank has two
different checking ranges for hot and cold fluids.
Check the power steering fluid level
monthly.
1. Park the vehicle on a level surface,
and stop the engine.
2. Check the fluid level of the reservoir tank.
When the fluid is hot after the vehicle has
been run: Check that the oil level isbetween “HOT MIN ”and “HOT MAX ”on
the surface of the reservoir tank.
When the fluid is cool before the vehicle is
run: Check that the oil level is between“ COLD MIN ”and “COLD MAX ”on the
surface of the reservoir tank.
3. If the fluid level is lower than the
applicable “MIN ”line, add the recom-
mended fluid as necessary to bring the
level between the “MIN ”and “MAX ”line.
If the fluid level is extremely low, it may
indicate possible leakage. Consult your
SUBARU dealer for an inspection.
WARNING
Be careful not to burn yourself
because the fluid may be hot.
CAUTION
. When power steering fluid is
being added, use only clean fluid,
and be careful not to allow any
dirt into the tank. And never use
different brands together.
. Be careful not to spill power
steering fluid when adding it. If
power steering fluid touches the
exhaust pipe, it may cause a bad
smell, smoke, and/or a fire. If
power steering fluid gets on the
exhaust pipe, be sure to wipe it off.
& Recommended fluid
Refer to “Fluids ”F 12-7.
Maintenance and service
11-17

&Lubricants
NOTE
Each quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on the
temperature and other factors. ! Engine oil
For checking, adding and replacing procedure, or other details, refer to “Engine oil ”F 11-8.
Oil grade SAE viscosity No. and
applicable temperature Engine oil capacity
API classification SM or SN
with the words “
ENERGY CONSERVING ”or
“ RESOURCE CONSERVING ”orILSAC GF-4 or GF-5, which can be
identified with the ILSAC certification
mark (Starburst mark) 5W-30 synthetic
oil is the required oil for
optimum engine performance and pro-
tection. Conventional oil may be used if
synthetic oil is unavailable.
*: 10W-30, 10W-40, 5W-30 or 5W-40
conventional oil may be used if replen-
ishment is needed but should be changed
to 5W-30 synthetic oil at the next oil change.
· When adding the oil from L to F level:
1.1 US qt (1.0 liter, 0.9
Imp qt)
· When changing the oil and oil filter:
- Except STI:
4.4 US qt (4.2 liters, 3.7
Imp qt)
- STI:
4.5 US qt (4.3 liters, 3.8
Imp qt) Specifications
12-5
– CONTINUED –

12-6Specifications
!Manual transmission and rear differential gear oil
Oil grade SAE viscosity No. and applicable temperature Applied part and model Oil capacity
API classification GL-5
Manual transmission 5-speed 3.7 US qt (3.5 liters, 3.1 Imp qt)
6-speed 4.3 US qt (4.1 liters, 3.6 Imp qt)
Rear differential STI 1.1 US qt (1.0 liter, 0.9 Imp qt)Others
0.8 US qt (0.8 liter, 0.7 Imp qt)
For the checking procedures or other details, refer to “Manual transmission oil ”F 11-15 or “Rear differential gear oil ”F 11-16.

crease in temperature could cause
tread separation, and failure of the
tire(s). Possible resulting loss of
vehicle control could lead to anaccident. !Measuring and adjusting air
pressure to achieve proper in-
flation
Check and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month 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
specific values. 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 out-
doors before driving the vehicle.
When a tire becomes warm, the air
inside it expands, causing the tire
pressure to increase. Be careful not
to mistakenly release air from a
warm tire to reduce its pressure. &
Glossary of tire terminology
. Accessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not). . Bead
The part of the tire that is made of
steel wires, wrapped or reinforced
by ply cords and that is shaped to fit
the rim.. Bead separation
A breakdown of the bond between
components in the bead.. Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate angles substantially
less than 90 degrees to the center-
line of the tread. . Carcass
The tire structure, except tread and sidewall rubber which, when in-
flated, bears the load. .
Chunking
The breaking away of pieces of the
tread or sidewall.. Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more.. Cord
The strands forming the plies in the tire. . Cord separation
The parting of cords from adjacent
rubber compounds.. Cracking
Any parting within the tread, side-
wall, or inner liner of the tire
extending to cord material. . Curb weight
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.
Consumer information and Reporting safety defects
13-5
– CONTINUED –

Loading your vehicle.................................................. 8-10
Low fuel warning light ................................................. 3-20
Low tire pressure warning light .................................... 3-16
Lower and tether anchorage ........................................ 1-29
LSD (Limited slip differential) ....................................... 7-24
Lubricants ................................................................. 12-5
M Maintenance Precautions ........................................................... 11-3
Schedule .............................................................. 11-3
Seatbelt ................................................................ 1-19
Tools ...................................................................... 9-3
Malfunction indicator light (check engine warning light) ... 3-15Manual Climate control system ............................................. 4-3
Transmission oil ............................................ 11-15, 12-6
Transmission-5 speeds ........................................... 7-16
Transmission-6 speeds ........................................... 7-14
Map light ........................................................... 6-3, 11-46
Meters and gauges ...................................................... 3-5
Mirror defogger .......................................................... 3-45
Mirrors ...................................................................... 3-37
Moonroof .......................................................... 2-27, 9-17
N
New vehicle break-in driving .......................................... 8-2
O
Odometer/Trip meter .................................................... 3-7
Oil filter ..................................................................... 11-9 Oil level
Engine .................................................................. 11-8
Manual transmission ............................................. 11-15
Rear differential gear ............................................ 11-16
Oil pressure warning light ............................................ 3-16
Outside Mirror defogger ...................................................... 3-45
Mirrors .................................................................. 3-44
Temperature indicator .............................................. 3-27
Overheating engine .................................................... 9-12
PParking Brake .................................................................... 7-33
Brake stroke ........................................................ 11-23
Tips ...................................................................... 7-33
Periodic inspections ..................................................... 8-4
Petrol fuel ................................................................... 7-3
Power Door locking switch .................................................. 2-6
Outside mirrors .............................................. 3-44, 3-45
Steering ................................................................ 7-24
Steering fluid ................................................ 11-17, 12-7
Windows ............................................................... 2-20
Precautions against vehicle modification ................ 1-21, 1-57
Preparing to drive ........................................................ 7-8
RRear Combination lights ................................................ 11-43
Differential gear oil ........................................ 11-16, 12-6 Index
14-7

14-8Index
Gate ............................................................. 2-26, 9-16
Turn signal light .................................................... 11-43
Viscous limited slip differential ................................. 7-24
Rear differential Oil temperature warning light ................................... 3-16
Rear seat .................................................................... 1-7
Armrest ................................................................... 1-8
Folding down ........................................................... 1-9
Head restraint adjustment ......................................... 1-8
Rear window Defogger ............................................................... 3-45
Wiper and washer switch ........................................ 3-36
Wiper blades ........................................................ 11-34
Recommended Automatic transmission fluid .................................... 12-7
Brake fluid. ............................................................ 12-7
Clutch fluid ............................................................ 12-7
Engine oil .............................................................. 12-5
Front differential gear oil ......................................... 12-6
Manual transmission oil .......................................... 12-6
Power steering fluid ................................................ 12-7
Rear differential gear oil .......................................... 12-6
Spark plugs ........................................................... 12-3
Refueling .................................................................... 7-4
Remote engine start system ........................................ 7-10
Remote keyless entry system ........................................ 2-7
Replacement
Brake pad and lining ............................................. 11-22
Wiper blades ........................................................ 11-32
Replacing Air cleaner element ............................................... 11-13 Battery (remote engine start transmitter)
.................... 7-12
Battery (remote keyless entry system) ....................... 2-11
Lost transmitters (remote keyless entry system) ......... 2-11
Replacing bulbs ....................................................... 11-39
Back-up light (4-door) ............................................ 11-43
Back-up light (5-door) ............................................ 11-45
Brake/Tail and rear side marker light (4-door) ........... 11-43
Cargo area light ................................................... 11-47
Dome light ........................................................... 11-47
Front fog light ....................................................... 11-42
Front turn signal light ............................................ 11-42
Headlight ............................................................. 11-39
High mount stop light ............................................ 11-47
License plate light ................................................. 11-45
Map light ............................................................. 11-46
Rear combination light .......................................... 11-43
Trunk light ........................................................... 11-47
REV indicator light and buzzer ..................................... 3-10
Rocking the vehicle ..................................................... 8-9
Roof molding and crossbar .......................................... 8-12
S Safety Precautions when driving ............................................. 5
Symbol ...................................................................... 2
Warnings ................................................................... 2
Seat Fabric ................................................................... 10-5
Front ...................................................................... 1-2
Heater .................................................................... 1-6
Rear ...................................................................... 1-7