2002 SUBARU IMPREZA coolant

Maintenance and service
11-13
– CONTINUED –
HGB032BB
SAE viscosity number and applicable temperature
1) 5W-30, SAE 5W-30 preferred
2) 10W-30, 10W-40
Recommended grade and viscosity under severe driving conditions
If the vehicle is used in desert areas, in areas with
very high temperatures, or used for heavy-duty ap-
plications such as a towing a trailer, use of oil with
the following grade and viscosities is recom-mended.
API classification SJ or SH: SAE viscosity No.: 30, 40, 10W-50, 20W-40,
20W-50
Cooling system
WARNING
Never attempt to remove the radiator cap until the engine has been shut off and has cooled
down completely. Since the coolant is underpressure, you may suffer serious burns from a
spray of boiling hot coolant when the cap isremoved.
CAUTION
The cooling system has been filled at the
factory with a high quality, corrosion-inhibit-
ing, year-around coolant which provides protection against freezing down to –33°F
(–36 °C). For adding, use genuine SUBARU
coolant or an equivalent: a mixture of 50%
soft water and 50% ethylene-glycol basis cool-
ant. Use of improper coolants may result in
corrosion in the cooling system. It is impor- tant to maintain protection against freezing and corrosion, even if freezing temperaturesare not expected. Never mix different kinds ofcoolant.

Maintenance and service
11-14
Do not splash the engine coolant over
painted parts. The alcohol contained in the en- gine coolant may damage the paint surface.
Hose and connections
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 temperature gauge ex-
ceeds the normal operating range, the cooling fan
circuit may be defective. Check the fuse and re-
place it if necessary. If the fuse is not blown, havethe cooling system checked by your SUBARU deal-
er.
If frequent addition of coolant is necessary, there
may be a leak in the engine cooling system. It is rec-
ommended that the cooling system and connectionsbe checked for leaks, damage, or looseness.
Engine coolant
Checking the coolant level
Check the coolant level at each fuel stop.
HGB001CB
1) “FULL” level mark
2) “LOW” level mark
1. Check the coolant level on the outside of the res- ervoir 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.

Maintenance and service
11-15
– CONTINUED –
HG0115
1) Rubber gaskets
3. After refilling the reserve tank and the radiator, re- install the caps and check that the rubber gaskets
inside the radiator cap are in the proper position. Changing the coolant
Change the engine coolant using the following pro-
cedures according to the maintenance schedule.
1. Remove the under cover.
2. Place a proper container under the drain plugand loosen the drain plug.
HGA000BD
1) Drain plug
3. Loosen the radiator cap to drain the coolant from
the radiator. Then drain the coolant from the reserve
tank. Tighten the drain plug securely.

Maintenance and service
11-17
– CONTINUED –
HGB001CB
1) “FULL” level mark
2) “LOW” level mark
WARNING
Never attempt to 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 isremoved.
4. Slowly pour the coolant and fill to the radiator fill-
er neck and to the reserve tank ’s “FULL” level mark.
Do not pour the coolant too quickly, as this may lead to insufficient air bleeding and trapped air in thesystem.
Coolant capacity: Non-turbo models: MT. 7.4 US qt (7.0 liters, 6.2 Imp qt)
AT. 7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo models: MT. 8.1 US qt (7.7 liters, 6.8 Imp qt)
AT. 8.0 US qt (7.6 liters, 6.7 Imp qt)
HG0115
1) Rubber gaskets
5. Put the radiator cap back on and tighten firmly. At
this time, make sure that the rubber gasket in the ra-

Maintenance and service
11-18
diator cap is correctly in place.
6. Start and run the engine for more than five min-utes at 2,000 to 3,000 rpm.
7. Stop the engine and wait until the coolant coolsdown (122 to 140°F [50 to 60 °C]). If there is any loss
of coolant, add coolant to the radiator ’s filler neck
and to the reserve tank ’s “FULL” level.
8. Put the radiator cap and reservoir cap back on
and tighten firmly. Air cleaner element
WARNING
Do not operate the engine with the air cleaner
element removed. The air cleaner element notonly filters intake air but also stops flames ifthe engine backfires. If the air cleaner elementis not installed when the engine backfires, youcould be burned.
The air cleaner element functions as a filter screen.
When the element is perforated or removed, engine
wear will be excessive and engine life shortened.
The air cleaner element is a viscous type. It is un-
necessary to clean or wash the element. Replacing the air cleaner element
Non-turbo models
Replace the air cleaner element according to the
maintenance schedule in the “Warranty and Mainte-
nance Booklet ”. Under extremely dusty conditions,
replace it more frequently. It is recommended that
you always use genuine SUBARU parts.

Maintenance and service
11-46
Windshield washer fluid
CAUTION
Never use engine coolant as washer fluid be-
cause it could cause paint damage.
Check the level of the washer fluid at each fuel stop.
If the level is low, fill the fluid up to the neck of the
reservoir.Use windshield washer fluid. If windshield washer
fluid is unavailable use clean water.
In areas where water freezes in winter, use an anti-
freeze type windshield washer fluid. SUBARU Wind-
shield Washer Fluid contains 58.5% methyl alcohol
and 41.5% surfactant, by volume. Its freezing tem-
perature varies according to how much it is diluted,
as indicated below.
Washer Fluid
Concentration
Freezing
Temperature
30% 50%
100%10.4 °F ( –12 °C)
–4 °F ( –20 °C)
–49 °F ( –45 °C)
HGB001IA

Specifications
12-4
Capacities
Fuel tank
15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil2.5-liter engine model4.2 US qt (4.0 liters, 3.5 Imp qt)
Turbo engine model4.8 US qt (4.5 liters, 4.0 Imp qt)
Transmission oil (MT)3.7 US qt (3.5 liters, 3.1 Imp qt)
Transmission oil (AT)10.0 US qt (9.5 liters, 8.4 Imp qt)
Power steering gear fluid0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant2.5-liter engine modelMT7.4 US qt (7.0 liters, 6.2 Imp qt)
AT7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo engine modelMT8.1 US qt (7.7 liters, 6.8 Imp qt)
AT8.0 US qt (7.6 liters, 6.7 Imp qt)
AT : Automatic transmission MT : Manual transmission

Index
14-4
Engine12-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment overview 11-7 . . . . . . . . . . . . . . . . . . .
Engine coolant 11-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine exhaust gas (Carbon monoxide) 8-3 . . . . . . .
Engine hood 11-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil 11-9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine overheating 9-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exterior care 10-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F
Fastening the seatbelt 1-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flat tires 9-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Floor mat (if equipped) 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FM reception 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog light switch (if equipped) 3-19 . . . . . . . . . . . . . . . . . . . . .
Folding down the rear seat – Wagon 1-9 . . . . . . . . . . . .
Fore and aft adjustment 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front differential gear oil (AT vehicles) 11-26 . . . . . . . . . .
Front fog light (if equipped) 11-61 . . . . . . . . . . . . . . . . . . . . . . .
Front seatbelt pretensioners 1-24 . . . . . . . . . . . . . . . . . . . . . . .
Front seats 1-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front side marker light 11-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front turn signal light and parking light 11-58 . . . . . . . .
Front-wheel drive warning light
(for AT vehicles – if equipped) 3-14 . . . . . . . . . . . . . . . .
Fuel 7-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel economy hints 8-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fuel filler lid and cap 7-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel gauge 3-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel requirements 7-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse panel located behind the coin tray 12-6 . . . . . . .
Fuse panel located in the engine compartment 12-8 .
Fuses 11-51
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses and circuits 12-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
G
Glove compartment 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GVWR and GAWR (Gross Vehicle Weight
Rating and Gross Axle Weight Rating) 8-17 . . . . .
H
Hazard warning flasher 3-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight 11-56
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlight flasher 3-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlights 3-15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headrest adjustment (if equipped) 1-10 . . . . . . . . . . . . . .
Head restraint adjustment 1-5 . . . . . . . . . . . . . . . . . . . . . . . . .
Heater operation 4-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High beam indicator light 3-14 . . . . . . . . . . . . . . . . . . . . . . . . . .
High/low beam change (dimmer) 3-16 . . . . . . . . . . . . . . . .
High mount stop light 11-67 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 3-31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hose and connections 11-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
How to jump start 9-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .