2006 SUBARU BAJA oil viscosity

8-11
Driving tips
– CONTINUED –
yFrequent 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.Winter driving „ Operation during cold weather
Carry some emergency equipment, such as tire
chains, a window scraper, a bag of sand, flares, a
small shovel, and jumper cables.
Check the battery and cables. Cold temperatures re-
duce battery capacity. The battery must be in good
condition to provide enough power for cold winterstarts.
Use an engine oil of proper grade and viscosity for
cold weather. Heavy summer oil will cause harder
UB8046AA

11 - 1
11
Maintenance and service
Maintenance schedule ................................. 11-3
Maintenance precautions ............................ 11-3 Before checking or servicing in the engine compartment .................................................. 11-4
When you do checking or servicing in the engine compartment while the engine is
running ............................................................ 11-5
Engine hood .................................................. 11-5
Engine compartment overview ................... 11-8 Non-turbo models ............................................. 11-8
Turbo models .................................................... 11-9
Engine oil ...................................................... 11-10 Checking the oil level ....................................... 11-10
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 ...................................... 11-23 Replacing the air cleaner element ................... 11-23
Spark plugs ................................................... 11-25 Recommended spark plugs ............................. 11-26
Drive belts ..................................................... 11-26
Manual transmission oil ............................... 11-27 Checking the oil level ....................................... 11-27
Recommended grade and viscosity ................ 11-29
Automatic transmission fluid ...................... 11-29 Checking the fluid level .................................... 11-29
Recommended fluid ......................................... 11-31
Front differential gear oil (AT vehicles) ...... 11-32
Checking the oil level ....................................... 11-32
Recommended grade and viscosity ............... 11-33
Rear differential gear oil . .............................. 11-33
Checking the gear oil level .............................. 11-33
Recommended grade and viscosity ............... 11-35
Power steering fluid ...................................... 11-36 Checking the fluid level .................................... 11-36
Recommended fluid ......................................... 11-38
Brake fluid ..................................................... 11-38 Checking the fluid level .................................... 11-38
Recommended brake fluid ............................... 11-39
Clutch fluid (MT vehicles) ............................ 11-40 Checking the fluid level .................................... 11-40
Recommended clutch fluid .............................. 11-41
Brake booster ................................................ 11-42
Brake pedal .................................................... 11-42 Checking the brake pedal free play ................ 11-42
Checking the brake pedal reserve distance ... 11-43
Clutch pedal (Manual transmission vehicles) ..................................................... 11-43Checking the clutch function .......................... 11-43
Checking the clutch pedal free play ............... 11-44
Replacement of brake pad and lining ......... 11-44 Breaking-in of new brake pads and linings .... 11-45
Parking brake stroke ......... ........................... 11-46
Tires and wheels ............. .............................. 11-46

11-11
Maintenance and service
– CONTINUED –
Non-turbo models
1) Notch
2) Upper level
3) Lower level Turbo models
1) Notch
2) Upper level
3) Lower level
4. 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.
y Use only engine oil with the recommended
grade and viscosity. y Be careful not to spill engine oil when adding
it. If oil touches the exhaust pipe, it may cause
1 2
3
UGB081BB
1 2
3
UGB082BB

11 -1 5
Maintenance and service
– CONTINUED –
Oil capacity (Guideline):
4.2 US qt (4.0 liters, 3.5 Imp qt)
The oil quantity indicated above is only a guideline.
The necessary quantity of o il depends on the quantity
of oil that has been drained. The quantity of drained oil
differs slightly depending on the temperature of the oil
and the time the oil is left flowing out. After refilling the
engine with oil, therefore, you must use the dipstick to
confirm that the level is correct.
14.Start the engine and make sure that no oil leaks ap-
pear around the filter’s rubber seal and drain plug.
15.Run the engine until it reaches the normal operat-
ing 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. „ Recommended grade and viscosity
„Recommended
„ Oil grade and viscosity
Use only engine oil with the recommended
grade and viscosity.
Oil grade:
ILSAC GF-4, which can be identified with the IL-
SAC certification mark (Starburst mark)
or API classification SM with the words “ENERGY
CONSERVING”
These recommended oil grades can be identified by
looking for either or both of the following marks dis-
played on the oil container.
ILSAC Certification Mark (Starburst Mark)
HSB023AA

11 - 1 6
Maintenance and service
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
In choosing an oil, you want the proper quality and vis-
cosity, as well as one that will add to fuel economy.
The following table lists the recommended viscosities
and applicable temperatures.
When adding oil, different brands may be used togeth-
er as long as they are the same API classification and
SAE viscosity as those recommended by SUBARU. SAE viscosity No. and applicable temperature
*: 5W-30 is preferred.
Engine oil viscosity (thickness) affects fuel economy.
Oils of lower viscosity pr ovide better fuel economy.
However, in hot weather, oil of higher viscosity is re-
quired to properly lubricate the engine. „ Recommended grade and viscosity
under severe driving conditions
„Recommended
„ Oil grade and viscosityIf the vehicle is used in desert areas, in areas with very
high temperatures, or used for heavy-duty applica-
tions such as towing a trailer, use of oil with the follow-
ing grade and viscosities is recommended.
APISERVICESM
ENERGYCONSERVING
SAE
5W-30
1
2
3
B00446
5W-30*10W-30, 10W-40
-30 -20 -10 0 10 20 30 40
-20
06 0
20 80 100 40
HSB024BA

11 -1 7
Maintenance and service
– CONTINUED –
API classification SM (or SL):
SAE viscosity No.:
30, 40, 10W-50, 20W-40, 20W-50
Cooling systemCooling system
Never attempt to remove the radiator cap until
the engine has been shut off and has cooled
down completely. Since the coolant is under
pressure, you may suffer serious burns from a
spray of boiling hot coolant when the cap is re-
moved.
yThe cooling system has been filled at the fac-
tory with a high quality, corrosion-inhibiting,
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 coolant. Use of improper
coolants may result in corrosion in the cooling
system. It is important to maintain protection
against freezing and corrosion, even if freezing
temperatures are not expected. Never mix dif-
ferent kinds of coolant. y Do not splash the engine coolant over paint-

11 -2 9
Maintenance and service
– CONTINUED –
„Recommended grade and viscosity„
Recommended
„ Oil grade and viscosityEach oil manufacturer has its own base oils and addi-
tives. Never use differ ent brands together.
Oil grade:
API classification GL-5
SAE viscosity No. and applicable temperature
Automatic transmission fluidAutomatic transmission
Fluid
Fluid level
Automatic transmission
„ Checking the fluid level„Checking
„ Fluid levelThe automatic transmission fluid expands largely as
its temperature rises; the fluid level differs according to
fluid temperature. Therefore, there are two different
scales for checking the level of hot fluid and cold fluid
on the dipstick.
Though the fluid level can be checked without warm-
ing up the fluid on the “COLD” range, we recommend
checking the fluid level when the fluid is at operating
temperature. T Checking the fluid level when the fluid is hot
Check the fluid level monthly.
1. Drive the vehicle several miles to raise the temper-
ature of the transmission fluid up to normal operating
temperature; 158 to 176 °F (70 to 80 °C) is normal.
2. Park the vehicle on a level surface and set the park-
ing brake.
3. First shift the selector lever in each position. Then
shift it in the “P” position, and run the engine at idling
speed.
-30 -20 -10 0 10 20 30 40
-20 0 60 20
80W
75W/90 80 100
40
85W 90
HSB036BA

11 -3 3
Maintenance and service
– CONTINUED –
„Recommended grade and viscosity„
Recommended
„ Oil grade and viscosityEach oil manufacturer has its own base oils and addi-
tives. Never use differ ent brands together.
Oil grade:
API classification GL-5
SAE viscosity No. and applicable temperature
Rear differenti al gear oilRear
Differential gear oil
Differential gear oil
Rear
Oil level
Rear differential
„ Checking the gear oil level„Checking
„ Gear oil level
yBe careful not to spill re ar differential gear oil
when adding it. If rear differential gear oil
touches the exhaust pipe, it may cause a bad
smell, smoke, and/or a fire. If rear differential
gear oil gets on the exhaust pipe, be sure to
wipe it off.y 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.
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.
-30 -20 -10 0 10 20 30 40
-20 0 60 20
80W
75W/90 80 100
40
85W 90
HSB036BA