2023 SUBARU BRZ engine coolant

Cooling System
348■Synthetic OilYou 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" P381. Also, you must follow the oil
and filter changing intervals shown in the
Warranty and Maintenance booklet.NOTESynthetic 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.
11-7. Cooling System
■ Cooling Fan, Hose and
ConnectionsYour vehicle employs an electric cooling
fan which is thermost atically 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 "Engine Coolant
Temperature Gauge"  P129.
WARNING
Never remove the radiator 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 boiling 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. When neces-
sary 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.
B02099
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Cooling System
349
Maintenance and Service11
– CONTINUED –
Check the fuse and replace it if necessary.
Refer to "Fuses" P371. If the fuse is not
blown, have the cooling system checked
by your SUBARU dealer.
If the frequent addition of coolant is neces-
sary between vehicle service visits, it is
recommended that you have your vehicle
inspected by an authorized SUBARU
dealer to check for leaks, damage, or
looseness.■ Engine Coolant▼ Checking the coolant level1) “FULL” level mark
2) “LOW” level mark
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
coolant up to just below the filler neck as
shown in the following illustration.
1) Fill up to this level.
3. After refilling the reserve tank and the
radiator, reinstall t he cap and check that
the rubber gaskets in side the radiator cap
are in the proper position.
12B02100
1
B02101
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.
B00018
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Air Cleaner Element
350▼Changing the coolantIt 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”.
11-8. Air Cleaner ElementThe air cleaner element functions as a
filter screen. When the element is perfo-
rated or removed, engine wear will be
excessive and engine life shortened.
The air cleaner element is a dry type. It is
unnecessary to clean or wash the
element.
■ Replacing the Air Cleaner
ElementReplace the air cleaner element according
to the maintenance schedule in the
“Warranty and Maintenance Booklet”.
Under extremely dusty conditions, replace
it more frequently. It is recommended that
you always use genuine SUBARU parts.
WARNING
Do not operate the engine with the
air cleaner element removed. The
air cleaner element not only filters
intake air but also stops flames if
the engine backfires. If the air
cleaner element is not installed
when the engine backfires, you
could be burned.
CAUTION
When replacing the air cleaner ele-
ment, use a genuine SUBARU air
cleaner element. If it is not used,
there is the possibility of causing a
negative effect to the engine.
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Replacement of Wiper Blades
367
Maintenance and Service11
– CONTINUED –
If you fill the windshield washer tank with
a fluid with a different concentration from
the one used previously, purge the old
fluid from the piping between the wind-
shield washer tank and washer nozzles by
operating the washer for a certain period
of time. Otherwise, if the concentration of
the fluid remaining in the piping is too low
for the outside temperature, it may freeze
and block the nozzles.
11-24. Replacement of Wiper BladesGrease, wax, insects, or other material on
the windshield or the wiper blade results in
jerky wiper operation and streaking on the
glass. If you cannot remove the streaks
after operating the windshield washer or if
the wiper operation is jerky, clean the
outer surface of the windshield using a
sponge or soft cloth with a neutral deter-
gent or mild-abrasive cleaner. Do not,
however, use detergent to clean the blade
rubbers. Use only a sponge or soft cloth
(and no neutral deterge nt or mild abrasive
cleaner) when you clean the blade
rubbers. If you wipe the rubber of the
blade strongly, the black coating compo-
nent will peel off, which will cause the
wiper to judder. Also, after wiping it off,
check that the rubber has not come loose.
After cleaning the window glass and wiper
blade rubbers, be sure to rinse them with
clean water. Rinse the window until the
water does not form beads on the glass.
This indicates that the glass is clean.
CAUTION
Never use engine coolant as washer
fluid because it could cause paint
damage.
CAUTION
 Adjust the washer fluid concen-
tration appropriately for the
outside temperature. If the
concentration is inappropriate,
sprayed washer fluid may freeze
on the windshield and obstruct
your view, and the fluid may
freeze in the windshield washer
tank. Be careful foreign matter does
not contaminate the washer fluid
when filling the tank. Contamina-
tion could cause malfunctions,
such as clogging the pump.
 State or local regulations on vola-
tile organic compounds may
restrict the use of methanol, a
common windshield washer anti-
freeze additive. Washer fluids
containing non-methanol anti-
freeze agents should be used
only if they provide cold weather
protection without damaging
your vehicle’s paint, wiper blades
or washer system.
CAUTION
 Do not clean the wiper blades
with gasoline or a solvent, such
as paint thinner or benzine. This
will cause deterioration of the
wiper blades.
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Specifications12
Specifications
12-1. Specifications....................................................380
Dimensions ...................................................................380
Engine............................................................................380
Fuel ................................................................................381
Engine Oil ......................................................................381
Manual Transmission and Differential Gear Oil.........383
Fluids .............................................................................383
Engine Coolant .............................................................384
Electrical System ..........................................................385
Tires ...............................................................................385
Brake Pedal .............. .......................................... ...........385
Brake Disc ................ .......................................... ...........386
Brake Pad ........... ................................................... ........386
12-2. Bulb Chart ..........................................................387
Safety Precautions ...................................................... 387
Bulb Chart .................................................................... 388
12-3. Vehicle Identification ........................................390
12-4. Function Settings ..............................................391
Function Settings and Adjustments on the Center
Information Display ................................................... 391
Individual Settings an d Adjustments Excluding 
Center Information Display and Combination 
Meter Display (Color TFT) ......................................... 391
Function Settings and Adjustments Performed 
by a Dealer ................................................................. 391
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Specifications
384*1: Use one of the indicated types of fluid.
*2: The indicated fluid quantity is only a guideline. The necessary quantity for replacem ent may differ slightly depending on the temperature and other
factors.
*3: For more details about maintenance and service, refer to the indicated section.■ Engine CoolantThe indicated coolant quantity is only a guideline. The necessa ry quantity for replacement may differ slightly depending on the
temperature and other factors. For more details abou t maintenance and service, refer to "Cooling System" P348.
Vehicle model Coolant capacity Coolant type
AT models 8.1 US qt (7.7 liters, 6.8 Imp qt)
SUBARU SUPER COOLANT
MT models 7.8 US qt (7.4 liters, 6.5 Imp qt)
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Tire Information
398Cord separation
The parting of cords from adjacent
rubber compounds.
 Cracking
Any parting within the tread,
sidewall, 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.
 Extra load tire
A tire designed to operate at higher
loads and higher inflation pressure
than the corresponding standard
tire.
 Groove
The space between two adjacent
tread ribs.
 Innerliner
The layer(s) forming the inside
surface of a tubeless tire that contains the inflating medium within

the tire.
 Innerliner separation
The parting of the innerliner from
cord material in the carcass.
 Intended outboard sidewall
(1) The sidewall that contains a
whitewall, bears white lettering or
bears manufacturer, brand, and/
or model name molding that is
higher or deeper than the same
molding on the other sidewall of
the tire, or
(2) The outward facing sidewall
of an asymmetrical tire that has a
particular side that must always
face outward when mounting on a
vehicle.
 Light truck (LT) tire
A tire designated by its manufac-
turer as primarily intended for use
on lightweight trucks or multipur-
pose passenger vehicles.
 Load rating
The maximum load that a tire is
rated to carry for a given inflation
pressure. 
Maximum inflation pressure
The maximum cold inflation pres-
sure to which a tire may be inflated.
 Maximum load rating
The load rating for a tire at the
maximum permissible inflation pres-
sure for that tire.
 Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
 Maximum permissible inflation
pressure
The maximum cold inflation pres-
sure to which a tire may be inflated.
 Measuring rim
The rim on which a tire is fitted for
physical dimension requirements.
 Normal occupant weight
150 lbs (68 kg) times the number of
occupants specified in the second
column of Table 1 that is appended
to the end of this section.BRZ_U.book 398 ページ ２０２２年３月２９日　火曜日　午後３時５９分

Index
411
Index14
Bottle holder ........................................................................ P215
BrakeAssist .............................................................................. P244
Booster............ .......................................... ............ P244, P355
Disc ................................................................................. P386
Fluid .......... ................................................... ......... P353, P383
Pad.................................................................................. P356
Parking ............ .......................................... ............ P255, P357
Pedal ............................................................................... P356
System ............................................................................ P244
Brake pedal Free play ......................................................................... P356
Reserve distance ............................................................ P356
Brake system .......... ........................................................ ..... P244
Warning light ................................................................... P140
Braking ................................................................................ P243 Tips ................................................................................. P243
Breaking-in of new brake pads ............................................ P357
BSD/RCTA .......................................................................... P268 Approach indicator light/warning buzzer ......................... P271
OFF indicator .................................................................. P273
OFF switch ...................................................................... P274
Warning indicator .... ..................................... ......... P150, P274
Warning light ................................................................... P274
Bulb Chart ............................................................................... P387
Replacing ........................................................................ P373
CCameraRear view camera ........................................................... P263
Catalytic converter ....................... ........................................ P291
Center console..................................................................... P214
Center information display (CID) . ........................................ P160
Cleaning .......................................................................... P336
Changing Coolant ............................................................................ P350
Flat tire ............................................................................ P303
Oil and oil filter ................................................................ P347
Charge warning light ............................................................ P137
CHECK ENGINE warning light/Malfunction indicator light... P136
Checking Brake pedal free play ...................................................... P356
Brake pedal reserve distance.......................................... P356
Clutch function ................................................................ P356
Clutch pedal free play ..................................................... P356
Coolant level ................................................................... P349
Fluid level (brake fluid) .................................................... P353
Fluid level (clutch fluid).................................................... P354
Fluid level (washer fluid) ................................................. P366
Oil level (engine oil)................. ........................................ P346
Child restraint systems .............................. ............................ P46
Installation of a booster seat ............................................. P54
Installation with ALR/ELR seatbel t .................................... P51
Lower and top tether anchorages ..................................... P55
Top tether anchorages ...................................................... P59
Child safety .............................................................................. P6
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