2004 SUBARU OUTBACK Transmission fluid

3-12
Instruments and controls
and come on steadily after several driving trips. You
should have your vehicle checked by an authorized
SUBARU dealer immediately. „
Charge warning light
If this light comes on when the engine is running, it
may indicate that the charging system is not working
properly.
If the light comes on while driving or does not go out
after the engine starts, stop the engine at the first safe
opportunity and check the alternator belt. If the belt is
loose, broken or if the belt is in good condition but the
light remains on, contact your nearest SUBARU deal-
er immediately. „ Oil pressure warning light
Do not operate the engine with the oil pressure
warning light on. This may cause serious en-
gine damage.
If this light comes on when the engine is running, it
may indicate that the engine oil pressure is low and the lubricating system is not working properly.
If the light comes on while driving or does not go out
after the engine starts, stop the engine at the first safe
opportunity and check the engine oil level. If the oil lev-
el is low, add oil immediately. If the engine oil is at the
proper level but the light remains on, contact your
nearest SUBARU dealer immediately. „
AT OIL TEMPerature warning
light (for AT vehicles)
If this light comes on when the engine is running, it
may indicate that the automatic transmission fluid tem-
perature is too hot.
If the light comes on while driving, it is unnecessary to
stop the vehicle, but avoid driving up steep grades or
in stop and go traffic. T Automatic transmission control system warn- ing
If the light flashes after the engine starts, it may indi-
cate that the automatic transmission control system is
not working properly. Contact your nearest SUBARU
dealer for service immediately.

7-15
Starting and operating
– CONTINUED –
Automatic transmission (L, L-S, OUT-
BACK)
Do not shift from the “P” or “N” position into
the “D”, “3”, “2”, “1” or “R” position while de-
pressing the accelerator pedal. This may cause
the vehicle to jump forward or backward.
yShift into the “P” or “R” position only after
the vehicle is completely stopped. Shifting
while the vehicle is moving may cause damage
to the transmission.y Do not race the engine for more than five sec-
onds in any position except the “N” or “P” po-
sition when the brake is set or the tires are on
blocks. This may cause the automatic transmis-
sion fluid to overheat. y Avoid shifting from one of the forward driving
positions into the “R” position or vice versa un-
til the vehicle has completely stopped. Such
shifting may cause damage to the transmis-
sion.
The automatic transmission is electronically controlled
with 4-forward speeds and 1-reverse speed.
NOTE
Immediately after a disconnected battery is recon-
nected or ATF (automatic transmission fluid) is re-
placed, you may feel that the automatic transmis-
sion operation is somewhat unusual.
This results from erasure or invalidation of data
the on-board computer has collected and stored in
memory to allow the transmission to shift at the
most appropriate times for the current condition
of your vehicle. Optimized shifting will be restored
as the vehicle continues to be driven for a while.

7-18
Starting and operating
NOTE
The transmission may downshift to 2nd or 1st
gear, depending on the way the accelerator pedal
is pressed to accelerate the vehicle again. V
While going down a hill
When descending a steep hill, depressing the brake
pedal will cause the transmission to downshift to 3rd
gear, thus applying engine braking. Reacceleration for
a short time will cause the transmission to upshift nor-
mally.
NOTE
In some cases, depressing the brake pedal on a
downhill grade does not result in an automatic
downshift to 3rd gear. This can happen when the
automatic transmission fluid temperature is very
low, for example, during driving shortly after the
vehicle has been parked for an extended period of
time. When the ATF temperature has risen to a cer-tain level, automatic downshift normally takes
place. In the meantime, downshift manually for en-
gine braking as required.
Also, downshifting when braking downhill will not
occur at speeds above approximately 50 mph (80
km/h). T
3 (Third)
This position is for using engine braking when going
down a hill or for climbing a grade.
The transmission automatically shifts into a suitable
gear from 1st to 3rd according to the vehicle speed
and the acceleration you require.
When more acceleration is required in this position,
press the accelerator pedal fully to the floor and hold
that position. The transmission will automatically
downshift to 2nd or 1st gear. When you release the
pedal, the transmission will return to the original gear position. T 2 (Second)
This position is for using engine braking when going
down a hill or for climbing a steep grade.
In this position, the transmission holds in the 2nd gear.
Use this position when starting off from a standstill on
slippery road surfaces such as mud or snow. It will en-
sure greater traction. T 1 (First)
This position is for driving up or down very steep
grades, or driving through mud or sand, or on slippery
surfaces. In this position, the transmission holds in the
1st gear.

7-21
Starting and operating
– CONTINUED –
Automatic transmission (with SPORTSHIFT mode – 2.5GT,
2.5GTLO)
Do not shift from the “P” or “N” position into
the “D”, “3”, “2”, “1” or “R” position while de-
pressing the accelerator pedal. This may cause
the vehicle to jump forward or backward.
yShift into the “P” or “R” position only after
the vehicle is completely stopped. Shifting
while the vehicle is moving may cause damage
to the transmission. y Do not race the engine for more than five sec-
onds in any position except the “N” or “P” po-
sition when the brake is set or when wheel
blocks are used. This may cause the automatic
transmission fluid to overheat. y Avoid shifting from one of the forward driving
positions into the “R” position or vice versa un-
til the vehicle has completely stopped. Such shifting may cause damage to the transmis-
sion.
The automatic transmission is electronically controlled
with 4-forward speeds and 1-reverse speed. Also, it
has a SPORTSHIFT mode.
NOTE
Immediately after a disconnected battery is recon-
nected or ATF (automatic transmission fluid) is re-
placed, you may feel that the automatic transmis-
sion operation is somewhat unusual.
This results from erasure or invalidation of data
which the on-board computer has collected and
stored in memory to allow the transmission to
shift at the most appropriate times for the current
condition of your vehicle. Optimized shifting will
be restored as the vehicle continues to be driven
for a while.

7-24
Starting and operating
the pedal, the transmission will return to the original
gear position.
To use the SPORTSHIFT mode, move the lever from
this position into the manual gate. V
While climbing a grade
When driving up a hill, undesired upshift to 4th gear is
prevented from taking place when the accelerator is
released. This minimizes the chance of subsequent
downshifting to a lower gear when accelerating again.
This prevents repeated upshifting and downshifting re-
sulting in a smoother operation of the vehicle.
NOTE
The transmission may downshift to 2nd or 1st
gear, depending on the way the accelerator pedal
is pressed to accelerate the vehicle again. V While going down a hill
When descending a steep hill, depressing the brake
pedal will cause the transmission to downshift to 3rd
gear, thus applying engine brakeing. Reacceleration
for a short time will cause the transmission to upshift
normally.
NOTE
In some cases, depressing the brake pedal on a
downhill grade does not result in an automatic downshift to 3rd gear. This can happen when the
automatic transmission fluid temperature is very
low, for example, during driving shortly after the
vehicle has been parked for an extended period of
time. When the ATF temperature has risen to a cer-
tain level, automatic downshift normally takes
place. In the meantime, downshift manually for en-
gine braking as required.
Also, downshifting when braking downhill will not
occur at speeds above approximately 50 mph (80
km/h). T
3 (Third)
This position is for using engine braking when going
down a hill or for climbing a grade.
The transmission automatically shifts into a suitable
gear from 1st to 3rd according to the vehicle speed
and the acceleration you require.
When more acceleration is required in this position,
press the accelerator pedal fully to the floor and hold
that position. The transmission will automatically
downshift to 2nd or 1st gear. When you release the
pedal, the transmission will return to the original gear position. T 2 (Second)
To shift from the “3” to “2” position, push the release

8-10
Driving tips
y
Always check your brakes for effectiveness immedi-
ately after driving in sand, mud or water. Do this by
driving slowly and stepping on the brake pedal. Re-
peat that process several times to dry out the brake
discs and brake pads.y Do not drive or park over or near flammable materi-
als such as dry grass or fallen leaves, as they may
burn easily. The exhaust system is very hot while the
engine is running and right after engine stops. This
could create a fire hazard. y After driving through tall grass, mud, rocks, sand,
rivers, etc., check that there is no grass, bush, paper,
rags, stones, sand, etc. adhering to or trapped on the
underbody. Clear off any such matter from the under-
body. If the vehicle is used with these materials
trapped or adhering to the underbody, a mechanical
breakdown or fire could occur.y Secure all cargo carried inside the vehicle and make
certain that it is not piled higher than the seatbacks.
During sudden stops or jolts, unsecured cargo could
be thrown around in the vehicle and cause injury. Do
not pile heavy loads on the roof. Those loads raise the
vehicle’s center of gravity and make it more prone totip over. y If you must rock the vehicle to free it from sand or
mud, depress the accelerator pedal slightly and move
the selector lever back and forth between “D” and “R” repeatedly. Do not race the engine. For the best pos-
sible traction, avoid spinning the wheels when trying to
free the vehicle. y
When the road surface is extremely slippery, you
can obtain better traction by starting the vehicle with
the transmission in 2nd than 1st (both for MT and AT). y Never equip your vehicle with tires larger than those
specified in this manual. y Wash the vehicle’s underbody after off-road driving.
Suspension components are particularly prone to dirt
buildup, so they need to be washed thoroughly.y Frequent driving of an AWD vehicle under hard-driv-
ing conditions such as rough roads or off roads will ne-
cessitate more frequent replacement of engine oil,
brake fluid and transmission oil than that specified in
the maintenance schedule described in the “Warranty
and Maintenance Booklet”.
Remember that damage done to your SUBARU while
operating it off-road and not using common sense pre-
cautions such as those listed above is not eligible for
warranty coverage.

8-39
Driving tips
– CONTINUED –
length caused by attaching the trailer to your vehicle.
1) Left turn
2) Right turn
y Backing up with a trailer is difficult and takes prac-
tice. When backing up with a trailer, never accelerate
or steer rapidly. When turning back, grip the bottom of
the steering wheel with one hand and turn it to the left
for a left turn, and turn it to the right for a right turn. y If the ABS warning light illuminates while the vehicle
is in motion, stop towing the trailer and have repairs
performed immediately by the nearest SUBARU deal- er. T
Driving on grades
y Before going down a steep hill, slow down and shift
into lower gear (if necessary, use 1st gear) in order to
utilize the engine braking effect and prevent overheat-
ing of your vehicle’s brakes. Do not make sudden
downshifts.y When driving uphill in hot weather, the air condition-
er may turn off automatically to protect the engine from
overheating.y When driving uphill in hot weather, pay attention to
the water temperature gauge pointer (for all vehicles)
and AT OIL TEMP warning light (for AT vehicles) since
the engine and transmission are relatively prone to
overheating under these conditions. If the water tem-
perature gauge pointer approaches the OVERHEAT
zone or the AT OIL TEMP warning light illuminates,
immediately switch off the air conditioner and stop the
vehicle at the nearest safe place. Refer to the “Engine
overheating” section in chapter 9, and “Warning and
indicator lights” section in chapter 3. y If your vehicle has an automatic transmission, avoid
using the accelerator pedal to stay stationary on an
uphill slope instead of using the parking brake or foot
brake. That may cause the transmission fluid to over-
heat. Also, if your vehicle is equipped with an automat-
ic transmission, avoid driving with the gear selector le-
ver in “D” when towing a heavy trailer to prevent fluid
1 2
HS8023BB

11 - 1
11
Maintenance and service
Ma inte nan ce sche du le .. ... ... ... .. ... ... ... ... .. ... ... 11-3
Ma in te nan ce precau tio ns ... ... .. ... ... ... ... .. ... ... 11-3
B ef ore checki ng o r servicing in th e e ngi ne
c o m part ment ..... ..................... ..................... ... 11-4
W hen y ou do c h ecking or servic ing in t h e
e ngi ne c omp artme nt while the engi ne is
r u nn ing ............... ..................... ..................... ... 11-5
En gine ho od .. ... ... ... .. ... ... ... ... ... .. ... ... ... ... .. ... ... 11-5
Engine compartment overview ................... 11-8 2.5 liter models .................................................. 11-8
2.5 liter CALIFORNIA spec models ................. 11-9
3.0 liter models .................................................. 11-10
Engine oil ...................................................... 11-11 Checking the oil level ....................................... 11-11
Changing the oil and oil filter .......................... 11-12
Recommended grade and viscosity ................ 11-15
Recommended grade and viscosity under severe driving conditions .............................. 11-16
Cooling system ............................................. 11-17 Hose and connections ...................................... 11-18
Engine coolant .................................................. 11-18
Air cleaner element ...................................... 11-22 Replacing the air cleaner element ................... 11-22
Spark plugs ................................................... 11-25 Recommended spark plugs ............................. 11-25
Drive belts ..................................................... 11-26 2.5 liter models .................................................. 11-26
3.0 liter models .................................................. 11-26
Manual transmission oil ............................... 11-27 Checking the oil level ....................................... 11-27 Recommended grade and viscosity ............... 11-27
Automatic transmission fluid ...................... 11-28 Checking the fluid level .................................... 11-28
Recommended fluid ......................................... 11-30
Front differential gear oil (AT vehicles) ...... 11-30 Checking the oil level ....................................... 11-30
Recommended grade and viscosity ............... 11-31
Rear differential gear oil ............................... 11-32 Checking the gear oil level .............................. 11-32
Recommended grade and viscosity ............... 11-34
Power steering fluid ...................................... 11-35 Checking the fluid level .................................... 11-35
Recommended fluid ......................................... 11-36
Brake fluid ..................................................... 11-36 Checking the fluid level .................................... 11-36
Recommended brake fluid ............................... 11-37
Clutch fluid (MT vehicles) ............................ 11-38 Checking the fluid level .................................... 11-38
Recommended clutch fluid .............................. 11-38
Brake booster ................................................ 11-39
Brake pedal .................................................... 11-39 Checking the brake pedal free play ................ 11-39
Checking the brake pedal reserve distance ... 11-40
Clutch pedal (Manual transmission vehicles) ............... 11-40Checking the clutch function .......................... 11-40
Checking the clutch pedal free play ............... 11-41
Replacement of brake pad and lining ......... 11-41 Breaking-in of new brake pads and linings .... 11-42