engine oil SUBARU IMPREZA 2003 2.G Owner's Manual

Maintenance and service
11-11
– CONTINUED –
If you check the oil level just after stopping the en-
gine, wait a few minutes for the oil to drain back into
the oil pan before checking the level.
Just after driving or while the engine is warm, the
engine oil level reading may be in a range betweenthe upper level and the notch mark. This is caused
by thermal expansion of the engine oil.
To prevent overfilling the engine oil, do not add any
additional oil above the upper level when the engineis cold. Changing the oil and oil filter
Change the oil and oil filter according to the mainte-
nance schedule in the “Warranty and Maintenance
Booklet”.
The engine oil and oil filter must be changed more
frequently than listed in the maintenance schedule
when driving on dusty roads, when short trips are
frequently made, or when driving in extremely cold
whether.
1. Warm up the engine by letting the engine idle for
about 10 minutes to ease draining the engine oil.
2. Park the vehicle on a level surface and stop theengine.
3. Remove the oil filler cap.
1) Drain plug
4. Drain out the engine oil by removing the drain
plug while the engine is still warm. The used oil
should be drained into an appropriate container and
disposed of properly.
WARNING
Be careful not to burn yourself with hot en- gine oil.
5. Wipe the seating surface of the drain plug with a
clean cloth and tighten it securely with a new seal-

Maintenance and service
11-12
ing washer after the oil has completely drained out.
1) Oil filter
6. Remove the oil filter with an oil filter wrench.
7. Before installing a new oil filter, apply a thin coatof engine oil to the seal.
8. Clean the rubber seal seating area of the lower
crank case and install the oil filter by hand turning.
Be careful not to twist or damage the seal.
9. Tighten it approximately two-thirds of a turn after the seal makes contact with the lower crank case.
CAUTION
Never over tighten the oil filter because that can result in an oil leak.
10. Pour engine oil through the filler neck.
Oil capacity (guideline): 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)
The oil quantity indicated above is only guideline.
The necessary quantity of oil depends on the quan- tity of oil that has been drained. The quantity of
drained oil differs slightly depending on the temper-
ature of the oil and the time the oil is left flowing out.
After refilling the engine with oil, therefore, you must
the dipstick to confirm that the level is correct.
11. Start the engine and make sure that no oil leaks
appear around the filter ’s rubber seal and drain
plug.
12. Run the engine until it reaches the normal oper-
ating temperature. Then stop the engine and wait a
few minutes to allow the oil drain back. Check the oil
level again and if necessary, add more engine oil.

Maintenance and service
11-14
New API Certification Mark (Starburst Mark)
In choosing an oil, you want the proper quality and
viscosity, as well as one that will add to fuel econo-
my. The following table lists the recommended vis-
cosities and applicable temperatures.
When adding oil, different brands may be used to-
gether as long as they are the same API classifica-
tion and SAE viscosity as those recommended bySUBARU.SAE viscosity number and applicable temperature
*) 5W-30 is preferred.
Engine oil viscosity (thickness) affects fuel economy.
Oils of lower viscosity provide better fuel economy.
However, in hot weather, oil of higher viscosity is re-
quired to properly lubricate the engine.
CAUTION
Use only engine oil with the recommended
grade and viscosity.

Maintenance and service
11-15
– CONTINUED –
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 towing a trailer, use of oil with the
following grade and viscosities is recommended.
API classification SL or SJ: SAE viscosity No.: 30, 40, 10W-50, 20W-40,
20W-50
Synthetic oil
You can 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 inthis owner ’s manual, and must follow the oil and filter
changing intervals shown in the maintenance schedule. 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
11-18
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 is removed.
4. Install the under cover.
Non-turbo models
1) Filler neck
2) Fill up to this level
Turbo models
1) Filler neck
2) Fill up to this level
5. Slowly pour the coolant and fill to the radiator fill-
er neck. Do not pour the coolant too quickly, as this
may lead to insufficient air bleeding and trapped airin the system.

Maintenance and service
11-26
Turbo model
Check the oil level monthly.
1. Park the vehicle on a level surface and stop theengine.
2. Pull out the dipstick, wipe it clean, and insert itagain.1) Upper level 2) Lower level
3. Pull out the dipstick again and check the oil level
on it. If it is below the lower level, add oil through thedipstick hole to bring the level up to the upper level. Recommended grade and viscosity
Each oil manufacturer has its own base oils and ad-
ditives. Never use different brands together.
Oil grade: API classification GL-5

Maintenance and service
11-29
– CONTINUED –
Recommended fluid
“ Dexron III ” Type Automatic Transmission FluidFront differential gear oil
(AT vehicles) Checking the oil level
1) Yellow handle
Check the differential oil level monthly.
1. Park the vehicle on a level surface and stop the engine.
2. Pull out the dipstick, wipe it clean, and insert itagain.

Maintenance and service
11-32
Recommended grade and viscosity
Each oil manufacturer has its own base oils and ad-
ditives. Never use different brands together.
Oil grade: API classification GL-5
SAE viscosity No. and Applicable Temperature Power steering fluid
Checking the fluid level
1) Reservoir tank
The power steering fluid expands greatly as its tem-
perature rises; the fluid level differs according to
fluid temperature. Therefore, the reservoir tank has
two different checking ranges for hot and coldfluids.
Check the power steering fluid level monthly.
1. Park the vehicle on a level surface, and stop theengine.

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)
2.0-liter 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)
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)
AT : Automatic transmission MT : Manual transmission

Index
14-3
Area cover 6-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tie-down hooks 6-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Catalytic converter 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Center
Console 6-6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilators 4-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visor 6-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing
Flat tire 9-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil and oil filter 11-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charge warning light 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHECK ENGINE warning light/Malfunction indicator lamp 3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Brake pedal free play 11-37 . . . . . . . . . . . . . . . . . . . . . . .
Brake pedal reserve distance 11-37 . . . . . . . . . . . . . .
Clutch function 11-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch pedal free play 11-38 . . . . . . . . . . . . . . . . . . . . . .
Engine oil level 11-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid level 11-27, 11-32 , 11-34, 11-35 . . . . . . . . . . .
Gear oil level 11-25, 11-29, 11-31 . . . . . . . . . . . . . . . .
Child restraint systems 1-31 . . . . . . . . . . . . . . . . . . . . . . . . .
Installation with seatbelt 1-34 . . . . . . . . . . . . . . . . . . . .
Lower and tether anchorages 1-36 . . . . . . . . . . . . . .
Child safety 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks 2-21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chime Key
3-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Seatbelt 3-10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cigarette lighter 6-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning
Aluminum wheels 10-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 10-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilator grille 4-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Climate control system 4-4 . . . . . . . . . . . . . . . . . . . . . . . . .
Clock 3-15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch fluid 11-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch pedal 11-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coat hook 6-14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Coin tray 6-6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling system 11-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Corrosion protection 8-13, 10-4 . . . . . . . . . . . . . . . . . . . . .
Cruise control 7-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cup holder 6-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
D
Daytime running light system 3-18 . . . . . . . . . . . . . . . . . .
Differential gear oil
Front 11-29
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear 11-31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 12-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disarming the system 2-16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Disc brake pad wear warning indicators 7-23 . . . . .
Dome light 6-2, 11-73 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .