2018 SUBARU WRX oil level

(499,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
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...................................................... 11-5
When checking or servicing in the engine
compartment while the engine is running............ 11-5
Maintenance tips................................................... 11-6
Removing and reinstalling clips............................ 11-6
Engine hood.......................................................... 11-9
Engine compartment overview.......................... 11-11
STI...................................................................... 11-11
Except STI.......................................................... 11-12
Engine oil............................................................. 11-13
Engine oil consumption...................................... 11-13
Checking the oil level.......................................... 11-13
Changing the oil and oil filter.............................. 11-15
Recommended grade and viscosity..................... 11-15
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........................ 11-19
Spark plugs......................................................... 11-21
Recommended spark plugs................................. 11-21
Drive belts........................................................... 11-21Manual transmission oil......................................11-22
Recommended grade and viscosity..................... 11-22
Continuously variable transmission fluid..........11-22
Front differential gear oil (CVT models) and
rear differential gear oil....................................11-23
Recommended grade and viscosity..................... 11-23
Power steering fluid (STI)...................................11-23
Checking the fluid level...................................... 11-23
Recommended fluid............................................ 11-24
Brake fluid............................................................11-24
Checking the fluid level...................................... 11-24
Recommended brake fluid.................................. 11-25
Clutch fluid (MT models).....................................11-25
Checking the fluid level...................................... 11-25
Recommended clutch fluid................................. 11-26
Brake booster......................................................11-26
Brake pedal..........................................................11-27
Checking the brake pedal free play..................... 11-27
Checking the brake pedal reserve distance ......... 11-27
Clutch pedal (MT models)...................................11-27
Checking the clutch function .............................. 11-27
Checking the clutch pedal free play.................... 11-28
Hill start assist system.......................................11-28
Replacement of brake pad andlining................11-28
Breaking-in of new brake pads (models with
electronic parking brake system)..................... 11-29
Breaking-in of new brake pads and linings
(models without electronic parking brake
system)........................................................... 11-29
Maintenance and service
11

(509,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Engine compartment overview&STI
1) Power steering fluid reservoir
(page 11-23)
2) Brake fluid reservoir/Clutch fluid reservoir
(page 11-24)
3) Fuse box (page 11-42)
4) Battery (page 11-41)
5) Windshield washer tank (page 11-38)
6) Engine oil filler cap (page 11-13)
7) Engine coolant reservoir (page 11-17)
8) Engine oil level gauge (page 11-13)
9) Coolant filler tank cap (page 11-17)
10) Air cleaner case (page 11-18)
–CONTINUED–
Maintenance and service/Engine compartment overview
11-11
11

(510,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
&Except STI
1) Brake fluid reservoir/Clutch fluid reservoir
(MT models) (page 11-24)
2) Fuse box (page 11-42)
3) Battery (page 11-41)
4) Windshield washer tank (page 11-38)
5) Engine oil filler cap (page 11-13)
6) Engine coolant reservoir (page 11-17)
7) Radiator cap (page 11-17)
8) Engine oil filter (page 11-15)
9) Engine oil level gauge (page 11-13)
10) Air cleaner case (page 11-18)
Maintenance and service/Engine compartment overview
11-12

(511,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Engine oil
CAUTION
.If the level gauge is not pulled out
easily, twist the level gauge right
and left, then pull it out. Other-
wise, you may be injured acci-
dentally straining yourself.
.Use only engine oil with the
recommended grade and vis-
cosity.
.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. If
engine oil gets on the exhaust
pipe, be sure to wipe it off.&Engine oil consumptionSome engine oil will be consumed while
driving. The rate of consumption can be
affected by such factors as transmission
type, driving style, terrain and tempera-
ture. Under the following conditions, oil
consumption can be increased and thus
require refilling between maintenance in-
tervals:
.When the engine is new and within the
break-in period.When the engine oil is of lower quality
.When the incorrect oil viscosity is used
.When engine braking is employed
(repeatedly)
.When the engine is operated at high
engine speeds (for extended periods of
time)
.When the engine is operated under
heavy loads (for extended periods of time)
.When the engine idles for extended
periods of time
.When the vehicle is operated in stop
and go and/or heavy traffic situations
.When the vehicle is used under severe
thermal conditions
.When the vehicle accelerates and
decelerates frequently
Under these or similar conditions, you
should check your oil at least every 2nd
fuel fill-up and change your engine oil more
frequently. Different drivers in the same
car may experience different results. If
your oil consumption rate is greater than
expected, contact your authorized
SUBARU retailer who may perform a test
under controlled conditions.
&Checking the oil level1. Park the vehicle on a level surface and
stop the engine. If you check the oil level
just after stopping the engine, wait a few
minutes for the oil to drain back into the oil
pan before checking the level.STI
1) Oil level gauge
2) Oil filler cap
–CONTINUED–Maintenance and service/Engine oil
11-13
11

(512,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Except STI
1) Oil level gauge
2) Oil filler cap
3) Oil filter
CAUTION
If the level gauge is not pulled out
easily, twist the level gauge right and
left, then pull it out. Otherwise, you
may be injured accidentally strain-
ing yourself.
2. Pull out the level gauge, wipe it clean,
and insert it again.
3. Be sure the level gauge is correctly
inserted until it stops.
STI
1) Notch
2) Full level
3) Low level
4) Approximately 1.1 US qt (1.0 liter, 0.9 Imp
qt) from low level to full level
Except STI
1) Full level
2) Low level
3) Approximately 1.1 US qt (1.0 liter, 0.9 Imp
qt) from low level to full level4. Pull out the oil level gauge again.
5.STI:
Check the oil level on the gauge. If the oil
level is below the low level mark, add oil so
that the full level is reached.
Except STI:
Check the oil levels on both sides of the
level gauge. Judge the engine oil level by
the lowest of the two levels. If the oil level is
below the low level mark, add oil so that
the full level is reached.
Maintenance and service/Engine oil
11-14

(513,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
CAUTION
.For models except STI, be careful
not to touch the engine oil filter
when removing the oil filler cap.
Doing so may result in a burn, a
pinched finger, or may cause
some other injury.
.Use only engine oil with the
recommended grade and vis-
cosity.
.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. If
engine oil gets on the exhaust
pipe, be sure to wipe it off.
To add engine oil, remove the engine oil
filler cap and slowly pour engine oil
through the filler neck. After pouring oil
into the engine, you must use the level
gauge to confirm that the oil level is
correct.
For models STI, just after driving or while
the engine is warm, the engine oil level
reading may be in a range between the
upper level and the notch mark. This is
caused by thermal expansion of the
engine oil.
NOTETo prevent overfilling the engine oil, do
not add any additional oil above the
upper level when the engine is cold.&Changing the oil and oil filterChange the oil and oil filter according to
the maintenance schedule in the“War-
ranty and Maintenance Booklet”.
The engine oil and oil filter must be
changed more frequently than listed in
the maintenance schedule when driving
on dusty roads, when short trips are
frequently made, or when driving in ex-
tremely cold weather.NOTE.Changing the engine oil and oil filter
should be performed by a well-trained
expert. Contact your SUBARU dealer
for changing the engine oil and oil filter.
Fully trained mechanics are on standby
at a SUBARU dealer to utilize the
special tools, spare parts and recom-
mended oil for this work, and also, used
oils are properly disposed of.
.If performing oil replacement your-
self, observe the local regulations and
dispose of waste oil properly.
&Recommended grade and
viscosity
CAUTION
Use only engine oil with the recom-
mended grade and viscosity.
Refer to“Engine oil”F12-4.NOTEEngine 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.
–CONTINUED–
Maintenance and service/Engine oil
11-15
11

(520,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
belt and if there is any looseness,
cracks, wear or unusual noise on the
front side belt, contact your
SUBARU dealer.
Continuing to use the vehicle with
the belt outside of the specification
may cause the engine to malfunc-
tion and the above components to
malfunction.
To check the deflection of the front side
belt, place a straightedge (ruler) across
two adjacent pulleys (alternator pulley and
crank pulley) and apply a force of 22 lbf (98
N, 10 kgf) midway between the pulleys by
using a spring scale. The belt deflection
should be the amount specified. If the front
side belt is loose, cracked or worn, contact
your SUBARU dealer.
in (mm)
Deflection
New belt
Used belt
A0.28–0.35
(7.0–9.0)0.35–0.43
(9.0–11.0)
The rear side belt is a stretch-type belt,
therefore the deflection does not need to
be checked. If there are cracks or wear
confirmed on the belts and a squeaking
noise is heard from them, contact your
SUBARU dealer.
Manual transmission oilIt is not necessary to check the transmis-
sion oil level. Check that there are no
cracks, damage or leakage. However,
have the oil inspected by your SUBARU
dealer according to the maintenance
schedule in the“Warranty and Mainte-
nance Booklet”. Consult your SUBARU
dealer for details.&Recommended grade and
viscosityEach oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”F12-6.
Continuously variable trans-
mission fluidIt is not necessary to check the transmis-
sion fluid level. Check that there are no
cracks, damage or leakage. However,
have the fluid inspected by your SUBARU
dealer according to the maintenance
schedule in the“Warranty and Mainte-
nance Booklet”. Consult your SUBARU
dealer for details.
Maintenance and service/Manual transmission oil
11-22

(521,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Front differential gear oil
(CVT models) and rear differ-
ential gear oilIt is not necessary to check the gear oil
level. Check that there are no cracks,
damage or leakage. However, have the oil
inspected by your SUBARU dealer ac-
cording to the maintenance schedule in
the“Warranty and Maintenance Booklet”.
Consult your SUBARU dealer for details.&Recommended grade and
viscosityEach oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”F12-6.
CAUTION
Using a differential gear oil other
than the specified oil may cause a
decline in vehicle performance.
Power steering fluid (STI)&Checking the fluid levelThe 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 is
between“HOT MIN”and“HOT MAX”onthe 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 you add power steering
fluid, 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
–CONTINUED–
Maintenance and service/Front differential gear oil (CVT models) and rear differential gear oil
11-23
11