2004 SUBARU IMPREZA WRX fuel

11 -4 5
Maintenance and service
– CONTINUED –
When installing winter tires, be sure to replace all four
tires. !Winter (snow) tires
Winter tires are best suited for driving on snow-cov-
ered and icy roads. However winter tires do not per-
form as well as summer tires and all season tires on
roads other than snow-covered and icy roads. ! Tire inspection
Check on a daily basis that the tires are free from se-
rious damage, nails, and stones. At the same time,
check the tires for abnormal wear.
Contact your SUBARU dealer immediately if you find
any problem.
NOTE " When the wheels and tires strike curbs or are
subjected to harsh treatment as when the vehicle
is driven on a rough surface, they can suffer dam-
age that cannot be seen with the naked eye. This
type of damage does not become evident until
time has passed. Try not to drive over curbs, pot-
holes or on other rough surfaces. If doing so is un-
avoidable, keep the vehicle’s speed down to a
walking pace or less, and approach the curbs as
squarely as possible. Also, make sure the tires are not pressed against the curb when you park the vehicle. "
If you feel unusual vibration while driving or find
it difficult to steer the vehicle in a straight line, one
of the tires and/or wheels may be damaged. Drive
slowly to the nearest authorized SUBARU dealer
and have the vehicle inspected. ! Tire pressures and wear
Maintaining the correct tire pressures helps to maxi-
mize the tires’ service lives and is essential for good
running performance. Check and, if necessary, adjust
the pressure of each tire (including the spare) at least
once a month (for example, during a fuel stop) and be-
fore any long journey.

11 -4 7
Maintenance and service
– CONTINUED –
"Correct tire pressure (tread worn evenly)
Roadholding is good, and steering is responsive. Roll-
ing resistance is low, so fuel consumption is also low- er. "
Abnormally low tire pressure (tread worn at
shoulders)
Rolling resistance is high, so fuel consumption is also
higher.
HSB052AA
HSB053AA

11 - 5 4
Maintenance and service
The tank is located on the right-hand side of the trunk.
NOTE "
Use only pure water for refilling.
" In cold weather (when you do not use the inter-
cooler water spray), keep the tank half-empty in
case the water freezes. A larger amount of water
could break the tank if it froze.
Windshield washer fluid
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 reser- voir.
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 temper-
ature varies according to how much it is diluted, as in-
dicated below.
UGB514BA
HGB056IA

12-4
Specifications !
Capacities
AT: Automatic transmission
MT: Manual transmission
Fuel tank15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil2.5-liter engine model4.2 US qt (4.0 liters, 3.5 Imp qt)
2.0-liter turbo engine model4.8 US qt (4.5 liters, 4.0 Imp qt)
2.5-liter turbo engine model
Transmission oil (MT)5 speed3.7 US qt (3.5 liters, 3.1 Imp qt)
6 speed4.3 US qt (4.1 liters, 3.6 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)
2.0-liter turbo engine modelMT8.1 US qt (7.7 liters, 6.8 Imp qt)
AT8.0 US qt (7.6 liters, 6.7 Imp qt)
2.5-liter turbo engine modelMT8.1 US qt (7.7 liters, 6.8 Imp qt)

14-5
Index
Seatbelt pretensioners
.......................................1-27
Seats ........................................................................... 1-2
Turn signal light and parking light ...................11-70
Front-wheel drive warning light ..............................3-25
Fuel .................................................................................... 7-2
Economy hints ........................................................ 8-2
Filler lid and cap ..................................................... 7-4
Gauge .................................................................. 3-9, 3-16
Requirements .......................................................... 7-2
Fuses ................................................................................ 11-60
Fuses and circuits ....................................................... 12-6
G
GAWR (Gross Axle Weight Rating) .....................8-20
Glove box ........................................................................ 6-6
GVWR (Gross Vehicle Weight Rating ) .............8-20
H
Hazard warning flasher ............................................. 3-6
Headlight beam leveler ............................................. 3-33
Headlight indicator light ............................................3-27
Headlights ......................................................... 3-29, 11-66
Headrest adjustment (Wagon) ..............................1-11
Head restraint adjustment (Front) .......................1-5
Heater operation .......................................................... 4-6
High beam indicator light ..........................................3-26
High mount stop light ................................................. 11-78Horn
.. .. ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. ... .. ... ... .. ... ... .. .. 3-5 0
Hose and connections ............................................... 11-19
I
Ignition switch ............................................................... 3-3
Illuminated entry ........................................................... 2-8
Illumination brightness control ...............................3-32
Indicator light High beam ................................................................ 3-26
Selector lever position ......................................... 3-26
Turn signal ............................................................... 3-26
Inside mirror ................................................................... 3-44
Intercooler water spray ............................................. 11-53
Warning light ........................................................... 3-25
Switch ........................................................................ 3-43
Internal trunk lid release handle ............................2-26
J
Jack and jack handle ................................................. 9-24
Jump starting ................................................................. 9-14
KKey Interlock release .................................................... 3-5
Number ...................................................................... 2-3
Reminder chime ..................................................... 3-4

GAS STATION REFERENCE
Fuel: !2.5 Liter models
Use only unleaded gasoline with an octane rat-
ing 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 optimum
engine performance and driveability, it is rec-
ommended that you use premium grade un-
leaded gasoline. ! 2.5 Liter (Turbo) models
Use premium unleaded gasoline with an oc-
tane rating of 94 AKI or higher. If premium un-
leaded gasoline with an octane rating of 93 AKI
is not available, premium unleaded gasoline
with octane rating of 91 AKI or higher may be
temporarily used. For optimum engine perfor-
mance and driveability, it is recommended that
you use premium grade unleaded gasoline
with an octane rating of 93 AKI or higher. !
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 In-
dex (AKI). Refer to “Fuel” section in this manu-
al.
Fuel capacity:
15.9 US gal (60 liters, 13.2 Imp gal) Engine oil:
Use only API classification SL with the words
“ENERGY CONSERVING” and 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.