engine coolant SUBARU LEGACY 2006 4.G User Guide

11 - 6 Maintenance and service
Engine compartment overview „2.5-liter non-turbo models
12 3 45 6
7
8
9
10
11
13 12
B00414
1) Power steering fluid reservoir (page
11-27)
2) Manual transmission oil level gauge
(MT) (page 11-20) or Differential gear
oil level gauge (AT) (page 11-23)
3) Clutch fluid reservoir (page 11-29)
4) Automatic transmi ssion fluid level
gauge (page 11-22)
5) Brake fluid reservoir (page 11-28)
6) Fuse box (page 11-45)
7) Battery (page 11-44)
8) Windshield washer tank (page 11-39)
9) Engine oil filler cap (page 11-9)
10) Engine coolant reservoir (page 11- 14)
11) Radiator cap (page 11-14)
12) Engine oil level gauge (page 11-9)
13) Air cleaner element (page 11-17)

Maintenance and service 11 - 7
– CONTINUED –
„2.5-liter turbo models
12 4 6
35
13 12 11 10 9 8 7
B00416
1) Power steering fluid reservoir (page 11-27)
2) Manual transmission oil level gauge
(MT) (page 11-20) or Differential gear
oil level gauge (AT) (page 11-23)
3) Clutch fluid reservoir (page 11-29)
4) Brake fluid reservoir (page 11-28)
5) Automatic transmission fluid level gauge (page 11-22)
6) Fuse box (page 11-45)
7) Battery (page 11-44)
8) Windshield washer tank (page 11-39)
9) Engine oil filler cap (page 11-9)
10) Engine coolant reservoir (page 11- 14)
11) Engine oil level gauge (page 11-9)
12) Radiator cap (page 11-14)
13) Air cleaner element (page 11-17)

11 - 8 Maintenance and service
„ 3.0-liter models
B00502
12 3 45
12 10
11 9 8 76
1) Power steering fluid reservoir (page
11-27)
2) Differential gear oil level gauge (AT)
(page 11-23)
3) Automatic transmi ssion fluid level
gauge (page 11-22)
4) Brake fluid reservoir (page 11-28)
5) Fuse box (page 11-45)
6) Battery (page 11-44)
7) Windshield washer tank (page 11-39)
8) Engine oil filler cap (page 11-9)
9) Engine coolant reservoir (page 11-
14)
10) Radiator cap (page 11-14)
11) Engine oil level gauge (page 11-9)
12) Air cleaner element (page 11-17)

Maintenance and service 11 - 1 3
– CONTINUED –
SAE viscosity number and applicable
temperature
*: 5W-30 is preferred.
Engine oil viscosity (t hickness) affects fuel
economy. Oils of lower viscosity provide
better fuel economy. However, in hot
weather, oil of higher viscosity is required
to properly lubricate the engine. „ Recommended grade and
viscosity under severe driv-
ing conditions
If the vehicle is used in desert areas, in ar-
eas with very high temperatures, or used
for heavy-duty applications such as tow-
ing a trailer, use of oil with the following
grade and viscosities is recommended.
API classification SM (or SL):
SAE viscosity No.:
30, 40, 10W-50, 20W-40, 20W-50
Cooling system
B00503
5W-30*
10W-30, 10W-40
-30 -20 -10 0 10 20 30 40
-20
06 0
20 80 100 40Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down com-
pletely. Since the coolant is under
pressure, you may suffer serious
burns from a spray of boiling hot
coolant when the cap is removed. yThe cooling system has been
filled at the factory 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 ba-
sis coolant. Use of improper cool-
ants may result in corrosion in the
cooling system. It is important to
maintain protection against freez-
ing and corrosion, even if freezing
temperatures are not expected.
Never mix different kinds of cool-
ant.

11 - 1 4 Maintenance and service
„Hose and connections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
If the radiator coolin g fan does not operate
even when the engine coolant tempera-
ture gauge exceeds the normal operating
range, the cooling fan circuit may be de-
fective. Check the fuse and replace it if
necessary. If the fuse is not blown, havethe cooling system checked by your
SUBARU dealer.
If frequent addition of coolant is neces-
sary, there may be a leak in the engine
cooling system. It is recommended that
the cooling system and connections be
checked for leaks, damage, or looseness. „
Engine coolant
T Checking the coolant level
Check the coolant level at each fuel stop.
1. Check the coolant level on the outside
of the reservoir while the engine is cool.
2. If the level is close to or lower than the
“LOW” level mark, add coolant up to the
“FULL” level mark. If the reserve tank is
empty, remove the radiator cap and refill
as required. 3. After refilling the reserve tank and the
radiator, reinstall the caps and check that
the rubber gaskets inside the radiator cap
are in the proper position.
y
Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
FULL LOW
600151
yBe careful not to spill engine cool-
ant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine co olant gets on the
exhaust pipe, be sure to wipe it off.
y Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
B00018

Maintenance and service 11 - 1 5
– CONTINUED –
T
Changing the coolant
Always add genuine Subaru cooling sys-
tem conditioner whenever the coolant is
replaced.
Change the engine coolant and add gen-
uine Subaru cooling system conditioner
using the following procedures according
to the maintenance schedule in the “War-
ranty and Maintenance Booklet”.
1. Remove the under cover.
2.5-liter models
1) Drain plug 3.0-liter models
1) Drain plug
2. Place a proper container under the
drain plug and loosen the drain plug.
3. Loosen the radiator cap to drain the
coolant from the radiator. Then drain the
coolant from the reserve tank. Tighten the
drain plug securely.
4. Install the under cover.
Non-turbo models
1) Fill up to here
Turbo models
1) Fill up to here
1
B00422
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down com-
pletely. Since the coolant is under
pressure, you may suffer serious
burns from a spray of boiling hot
coolant when the cap is removed.
B00423
1
1
B00424
1
B00425

11 - 1 6 Maintenance and service
5. Slowly pour the coolant and fill up to
just below the filler neck, allowing enough
room to add genuine Subaru cooling sys-
tem conditioner in the radiator. Add genu-
ine Subaru cooling system conditioner un-
til the coolant level reaches the filler neck.
Do not pour the coolant too quickly, as this
may lead to insufficient air bleeding and
trapped air in the system.
Coolant capacity (Guideline):
2.5-liter non-turbo models: MT. 6.8 US qt (6.4 liters, 5.6 Imp qt)
AT. 6.7 US qt (6.3 liters, 5.5 Imp qt)
2.5-liter turbo models: MT. 7.7 US qt (7.3 liters, 6.4 Imp qt)
AT. 7.6 US qt (7.2 liters, 6.3 Imp qt)
3.0-liter models:
7.6 US qt (7.2 liters, 6.3 Imp qt)6. Pour the coolant and fill to the reservoir
tank’s “FULL” level mark. 7. Put the radiator cap back on and tight-
en firmly. At this time
, make sure that the
rubber gasket in the radiator cap is cor-
rectly in place.
8. Start and run the engine for more than
five minutes at 2,000 to 3,000 rpm.
9. Stop the engine and wait until the cool-
ant cools down (122 to 140 °F [50 to
60 °C]). If there is any loss of coolant, add
coolant to the radiator’s filler neck and to
the reserve tank’s “FULL” level.
10.Put the radiator cap and reservoir cap
back on and tighten firmly.
y
Be careful not to spill engine cool-
ant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine co olant gets on the
exhaust pipe, be sure to wipe it off.
y Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
FULL LOW
600151
B00018

Maintenance and service 11 - 3 9
– CONTINUED –
Aluminum wheels
Aluminum wheels can be scratched and
damaged easily. Handle them carefully to
maintain their appearance, performance,
and safety. yWhen any of the wheels is removed and
replaced for tire rotation or to change a
flat, always check the tightness of the
wheel nuts after driving approximately 600
miles (1,000 km). If any nut is loose, tight-
en it to the specified torque.y Never apply oil to the threaded parts,
wheel nuts, or tapered surface of the
wheel.y Never let the wheel rub against sharp
protrusions or curbs.y Be sure to fit tire chains on uniformly
and completely around the tire, otherwise
the chains may scratch the wheel. y When wheel nuts, balance weights, or
the center cap is replaced, be sure to re-
place them with genuine SUBARU parts
designed for aluminum wheels.Windshield washer fluid
If you spray washer fluid on the windshield
but the supply of washer fluid appears to
diminish, check the level of washer fluid in the tank.
Use only those wheels that are
specified for your vehicle. Wheels
not meeting specifications could in-
terfere with brake caliper operation
and may cause the tires to rub
against the wheel well housing dur-
ing turns. The resulting loss of vehi-
cle control could lead to an acci-
dent.
Never use engine coolant as washer
fluid because it could cause paint
damage.
B00199

12-4 Specifications
„ Capacities
Fuel tank16.9 US gal (64 liters, 14.1 Imp gal)
Engine oil2.5-liter models4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0-liter models5.8 US qt (5.5 liters, 4.8 Imp qt)
Transmission oil (MT)3.7 US qt (3.5 liters, 3.1 Imp qt)
Transmission fluid (AT)2.5-liter non-turbo models9.8 US qt (9.3 liters, 8.2 Imp qt)
2.5-liter turbo and 3.0-liter models10.4 US qt (9.8 liters, 8.6 Imp qt)
AT differential gear oil2.5-liter non-turbo models1.3 US qt (1.2 liters, 1.1 Imp qt)
2.5-liter turbo and 3.0-liter models1.5 US qt (1.4 liters, 1.2 Imp qt)
Rear differential gear oil0.8 US qt (0.8 liter, 0.7 Imp qt)
Power steering fluid0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant2.5-liter non-turbo modelsMT6.8 US qt (6.4 liters, 5.6 Imp qt)
AT6.7 US qt (6.3 liters, 5.5 Imp qt)
2.5-liter turbo modelsMT7.7 US qt (7.3 liters, 6.4 Imp qt)
AT7.6 US qt (7.2 liters, 6.3 Imp qt)
3.0-liter models7.6 US qt (7.2 liters, 6.3 Imp qt)

14-4 Index
Snowy and icy roads ..................................................... 8-9
Tips ..................................................... 7-11, 7-16, 7-23, 8-5
Tired or sleepy ................................................................... 7
E
Electrical system ....... .......................................... ............. 12-3
Electronic Brake Force Distributio n (EBD) system ........... 7-28
Emergency Locking Retractor (ELR) ................................ 1-12
Engine Compartment overview ............. ................................... 11-6
Coolant ...................................................................... 11-14
Exhaust gas (Carbon monoxide) .. ........................... ...... 8-2
Hood ............................................................................ 11-4
Oil ................................................................................ 11-9
Overheating ................................................................. 9-12
Starting .......................................................................... 7-8
Stopping ........................................................................ 7-9
Exterior care ..................................................................... 10-2 F
Flat tires ............................................................................. 9-4
Floor mat .......................................................................... 6-12 Fluid level
Automatic transmission ............................................. 11-22
Brake ......................................................................... 11-28
Clutch ........................................................................ 11-29
Power steering ........................................................... 11-27
Fog light switch ................................................................. 3-34
Front
Differential gear oil ..................................................... 11-23
Fog light ..................................................................... 11-50 Seatbelt pretensioners ................................................. 1-21
Seats .............................................................................. 1-2
Fuel ..................................................................................... 7-2
Economy hints ............................................................... 8-2
Filler lid and cap ............................................................. 7-4
Gauge ................................................................... 3-8, 3-12
Requirements ................................................................ 7-2
Fuses .............................................................................. 11-45
Fuses and circuits ............................................................. 12-6 G
GAWR (Gross Axle Weight Rating ) .................................. 8-14
Glove box ........................................................................... 6-4
GVWR (Gross Vehicle Weight Ra ting) ............................. 8-14
H
Hazard warning flasher ....................................................... 3-5
Head restraint adjustment (Front) ... .................................... 1-5
Headlight
Flasher ......................................................................... 3-32
Indicator light ....................... ........................................ 3-25
Headlights ........... .......................................... ......... 3-31, 11-49
Heater operation ......... .......................................... .............. 4-5
High beam indicator light .................................................. 3-25
High mount stop light ...................................................... 11-56
Horn .................................................................................. 3-43
Hose and connections ................. ................................... 11-14
I
Ignition switch ..................................................................... 3-3 Light ............................................................................... 3-5