2004 SUBARU IMPREZA fuel cap

8-20
Driving tips
!
GVWR and GAWR (Gross Vehicle
Weight Rating and Gross Axle Weight Rating)
The certification plate attached to the driver’s side
door jamb shows GVWR (Gross Vehicle Weight Rat-
ing) and GAWR (Gross Axle Weight Rating).
The GVW (Gross Vehicle Weight) must never exceed
the GVWR. GVW is the combined total of weight of the
vehicle, fuel, driver, all passengers, luggage, any op-
tional equipment and trailer tongue load. Therefore,
the GVW changes depending on the situation. The
GVWR equals Curb Weight (actual weight of your ve-
hicle – including standard equipment, fluids, emergen- cy tools and spare tire assembly) plus the vehicle ca-
pacity weight.
In addition, the total weight applied to each axle
(GAW) must never exceed the GAWR. The front and
rear GAWs can be adjusted by relocating luggage in-
side the vehicle.
Even if the total weight of your luggage is lower than
the vehicle capacity weight, either front or rear GAW
may exceed the GAWR, depending on the distribution
of the luggage.
If you carry heavy loads in the vehicle, you should con-
firm that GVW and front and rear GAWs are within the
GVWR and GAWR by putting your vehicle on a vehi-
cle scale, found at a commercial weighing station.
Do not use replacement tires with a lower load range
than the originals because they may lower the GVWR
and GAWR limitations. Replacement tires with a high-
er load range than the originals do not increase the
GVWR and GAWR limitations.
UGB510CA

11 - 1 6
Maintenance and service
again and if necessary, add more engine oil.
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.
! Recommended grade and viscosity
Oil grade:
ILSAC GF-3, which can be identified with the new
API certification mark (Starburst mark)
or API classification SL with the words “ENERGY
CONSERVING” (if you cannot obtain the oil with
SL grade, you may use SJ grade “ENERGY CON-
SERVING” oil).
These recommended oil grades can be identified by
looking for either or both of the following marks dis-
played on the oil container. API Service label
1) Indicates the oil quality by API designations
2) Indicates the SAE oil viscosity grade
3) Indicates that the oil has fuel saving capabilities
APISERVICESL
ENERGYCONSERVING
SAE
5W
30
1
2
3
HSB022BB

11 -1 9
Maintenance and service
– CONTINUED –
ed parts. The alcohol contained in the enginecoolant may damage the paint surface.
! Cooling fan, 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 exceeds the
normal operating range, the cooling fan circuit may be
defective. Check the fuse and replace it if necessary.
If the fuse is not blown, have the cooling system
checked by your SUBARU dealer.
If frequent addition of coolant is necessary, there may
be a leak in the engine cooling system. It is recom-
mended that the cooling system and connections be
checked for leaks, damage, or looseness. !
Engine coolant
! Checking the coolant level
1) “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 reser-
voir 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 re-
fill as required.
FULL
LOW
HGB056CB
1 2

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.