2003 SUBARU IMPREZA oil level

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
11-18
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
11-25
– CONTINUED –
worn, contact your SUBARU dealer.
in (mm)
Deflection
New beltUsed belt
A0.28 — 0.35
(7.0 — 9.0)0.35 — 0.43
(9.0 — 11.0)
B0.30 — 0.33
(7.5 — 8.5)0.35 — 0.40
(9.0 — 10.0)
Manual transmission oil Checking the oil level
Non-turbo model
1) Yellow handle

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
11-30
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 to bring thelevel 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-5SAE viscosity No. and Applicable Temperature

Maintenance and service
11-31
– CONTINUED –
Rear differential gear oil Checking the gear oil level
Your vehicle may be equipped with a rear differential
protector. The differential protector provides protec-
tion to the rear differential assembly during off-road
use. Removal of the rear differential protector is not
required when checking the oil level.
1) Filler plug 2) Drain plug
1) Filler hole
2) Drain hole 3) Oil level
Remove the plug from the filler hole and check the oil level. The oil level should be kept even with thebottom of the filler hole. If the oil level is below the
bottom edge of the hole, add oil through the filler
hole to raise the level.
CAUTION
If the vehicle requires frequent refilling, there
may be an oil leak. If you suspect a problem,
have the vehicle checked at your SUBARU
dealer.

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.