2004 SUBARU IMPREZA WRX Owners Manual

11 - 3 2
Maintenance and service
A) HOT range
B) COLD range
1) Upper level
2) Lower level
4. Pull out the dipstick and check the fluid level on the
gauge. If it is below the lower level on the “HOT”
range, add the recommended automatic transmission
fluid up to the upper level. ! Checking the fluid level when the fluid is cold
When the fluid level has to be checked without time to
warm up the automatic transmission, check to see that
the fluid level is between the lower level and upper lev-
el on the “COLD” range. If it is below that range, add fluid up to the upper level. Be careful not to overfill. !
Recommended fluid
“Dexron III” Type Automatic Transmission FluidLF
LF
1 2
12
B A
HGB061BB

11 -3 3
Maintenance and service
– CONTINUED –
Front differential gear oil (AT vehi-
cles) !Checking the oil level
1) Yellow handle
1. Park the vehicle on a level surface and stop the en-
gine.
2. Pull out the dipstick, wipe it clean, and insert it
again. 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 the level
up to the upper level. ! Recommended grade and viscosity
Each oil manufacturer has its own base oils and addi-
tives. Never use different brands together.
Oil grade:
API classification GL-5
HGB056FB
1
L F
1 2
HSB040BB

11 - 3 4
Maintenance and service
SAE viscosity No. and Applicable Temperature
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 re-
quired when checking the oil level.
1) Filler plug
2) Drain plug
-30
-20 20 40 60 90
85W
80W
80W/90 80 100
0
-20 -10 10 20 30 40
0
HSB041AA
2 1HSB042BB

11 -3 5
Maintenance and service
– CONTINUED –
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 the bottom
of the filler hole. If the oil level is below the bottom
edge of the hole, add oil through the filler hole to raisethe level.
If the vehicle requires frequent refilling, there
may be an oil leak. If you suspect a problem,
have the vehicle checked at your SUBARU deal-
er.
! Recommended grade and viscosity
Each oil manufacturer has its own base oils and addi-
tives. Never use different brands together.
Oil grade:
API classification GL-5
SAE viscosity No. and Applicable Temperature
3 1
2
HSB043BB-30 -20 -10 0 10 20 30 40-20 0 60 20
80W
75W/90 80 100
40
85W 90
HSB036BA

11 - 3 6
Maintenance and service
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 dif-
ferent checking ranges for hot and cold fluids.
Check the power steering fluid level monthly.
1. Park the vehicle on a level surface, and stop the en-
gine. 1) Specified range
2. Check the fluid level of the reservoir tank.
When the fluid is hot after the vehicle has been run:
Check that the oil level is between “HOT MIN” and
“HOT MAX” on the surface of the reservoir tank.
When the fluid is cool before the vehicle is run: Check
that the oil level is between “COLD MIN” and “COLD
MAX” on the surface of the reservoir tank.
3. If the fluid level is lower than the applicable “MIN”
line, add the recommended fluid as necessary to bring
the level between the “MIN” and “MAX” line.
If the fluid level is extreme low, it may indicate possible
leakage. Consult your SUBARU dealer for inspection.
HGB058BB1
1 1
HSB045BB

11 -3 7
Maintenance and service
– CONTINUED –
Be careful not to burn yourself because the flu-id may be hot.
"When power steering fluid is being added,
use only clean fluid, and be careful not to allow
any dirt into the tank. And never use different
brands together.
" Avoid spilling fluid when adding it in the tank.
! Recommended fluid
“Dexron III” Type Automatic Transmission Fluid
Brake fluid !Checking the fluid level
1) “MAX” level mark
2) “MIN” level mark
Check the fluid level monthly.
Check the fluid level on the outside of the reservoir. If
the level is below “MIN”, add the recommended brake
fluid to “MAX”.
Use only brake fluid from a sealed container.
MAXMAX
MINMIN
HGB056GB
1 2

11 - 3 8
Maintenance and service
"
Brake fluid absorbs moisture from the air.
Any absorbed moisture can cause a dangerous
loss of braking performance." If the vehicle requires frequent refilling, there
may be a leak. If you suspect a problem, have
the vehicle checked at your SUBARU dealer.
" Never use different brands of brake fluid to-
gether. " When adding brake fluid, be careful not to al-
low any dirt into the reservoir. " Never splash the brake fluid over painted sur-
faces or rubber parts. Alcohol contained in the
brake fluid may damage them.
! Recommended brake fluid
FMVSS No. 116, fresh DOT 3 brake fluid
Clutch fluid (MT vehicles) !Checking the fluid level
1) “MAX” level mark
2) “MIN” level mark
MAXMIN
HGB056HB
1
2

11 -3 9
Maintenance and service
– CONTINUED –
1) “MAX” level mark
2) “MIN” level mark
Check the fluid level on the outside of the reservoir. If
the level is below “MIN” level mark, add the recom-
mended clutch fluid to “MAX” level mark.
Use only clutch fluid from a sealed container.
" Clutch fluid absorbs moisture from the air.
Any absorbed moisture can cause improper
clutch operation. " If the vehicle requires frequent refilling, there
may be a leak. If you suspect a problem, have the vehicle checked at your SUBARU dealer."
Never use different brands of clutch fluid to-
gether. " When clutch fluid is added, be careful not to
allow any dirt into the tank.
! Recommended clutch fluid
FMVSS No. 116, fresh DOT 3 brake fluid
MAXMIN
HGB055CB
1
2