2002 SUBARU IMPREZA fuel

Maintenance and service
11-39
– CONTINUED –
Driving even a short distance warms up the tires
and increases the tire pressures. Also, the tire pres-
sures are affected by the ambient temperature. It is
best to check tire pressure outdoors before drivingthe vehicle.
When a tire becomes warm, the air inside it ex-
pands, causing the tire pressure to increase. Be
careful not to mistakenly release air from a warm tire
to reduce its pressure. NOTE The air pressure in a tire increases by approxi-
mately 4.3 psi (30 kPa, 0.3 kg/cm 2
) when the tire
becomes warm. The tires are considered cold when the vehicle
has been parked for at least three hours or hasbeen driven less than one mile (1.6 km).
WARNING
Do not let air out of warm tires to adjust
pressrue. Doing so will result in low tire pres-sure.
Incorrect tire pressures detract from controllability
and ride comfort, and they cause the tires to wear
abnormally.
Correct tire pressure (tread worn evenly)
HGB033AA
Roadholding is good, and steering is responsive.
Rolling resistance is low, so fuel consumption is
also lower.

Maintenance and service
11-40
Abnormally low tire pressure (tread worn at
shoulders)
HGB024AA
Rolling resistance is high, so fuel consumption is
also higher.
Abnormally high tire pressure (tread worn in
center)
HGB025AA
Ride comfort is poor. Also, the tire magnifies the
effects of road-surface bumps and dips, possibly
resulting in vehicle damage.
If the tire placard shows tire pressures for the ve-
hicle when fully loaded and for the vehicle when
towing a trailer, adjust the tire pressures to the val-
ues that match current loading conditions.
WARNING
Driving at high speeds with excessively low tire pressures can cause the tires to deform
severely and to rapidly become hot. A sharp

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GAS STATION REFERENCE
Fuel: 2.5 Liter models: Use only unleaded gasoline with an octane
rating of 87 AKI or higher.
2.0 Liter (Turbo) models:
Use premium unleaded gasoline with an oc-
tane rating of 91 AKI or higher. If premium un-
leaded gasoline is not available, regular un-
leaded gasoline with octane rating of 87 AKI
or higher may be temporarily used. For opti-
mum engine performance and driveability, it
is recommended that you use premium grade
unleaded gasoline. Fuel octane rating: This octane rating is the average of the Re-
search Octane and Motor Octane numbers
and is commonly referred to as the Anti
Knock Index (AKI). Refer to “Fuel” section inthis manual.Fuel capacity:
15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil:
Use only API classification SJ or SH with the
words “ENERGY CONSERVING II”
or the New API certification mark (starburst
mark) displayed on the container.
Engine oil capacity: Non turbo models:
4.2 US qt (4.0 liters, 3.5 Imp qt)
Turbo models: 4.8 US qt (4.5 liters, 4.0 Imp qt)
Cold tire pressure:
See the label located under the driver’s door latch.