2006 SUBARU IMPREZA coolant reservoir

11-6 Maintenance and service
Engine compartment overview
Non-turbo models
1 2 3 4 5 6
7
8
9
10
11
13 12
B00464
1) Air cleaner element (page 11-15)
2) Manual transmission oil level gauge
(MT) (page 11-18) or Differential gear
oil level gauge (AT) (page 11-21)
3) Clutch fluid reservoir (page 11-26)
4) Automatic transmission fluid level gauge (page 11-20)
5) Brake fluid reservoir (page 11-25)
6) Fuse box (page 11-41)
7) Battery (page 11-40)
8) Windshield washer tank (page 11-36)
9) Engine coolant reservoir (page 11-
12)
10) Engine oil level gauge (page 11-8)
11) Engine oil filler cap (page 11-8)
12) Radiator cap (page 11-12)
13) Power steering fluid reservoir (page
11-24)

Maintenance and service 11-7
Turbo models
1 2 3 4 5 6
7
8
9
10
11
12
13
B00466
1) Air cleaner element (page 11-15)
2) Manual transmission oil level gauge
(MT) (page 11-18) or Differential gear
oil level gauge (AT) (page 11-21)
3) Automatic transmission fluid level gauge (page 11-20)
4) Clutch fluid reservoir (page 11-26)
5) Brake fluid reservoir (page 11-25)
6) Fuse box (page 11-41)
7) Battery (page 11-40)
8) Windshield washer tank (page 11-36)
9) Engine oil filler cap (page 11-8)
10) Engine coolant reservoir (page 11- 12)
11) Engine oil level gauge (page 11-8)
12) Radiator cap (page 11-12)
13) Power steering fluid reservoir (page
11-24)

11-12 Maintenance and service
Cooling system
Cooling fan, hose and con-
nections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
If the radiator cooling 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, have
the 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
Checking the coolant level
1)“FULL ” level mark
2) “LOW ” level mark
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.
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.
The 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.
Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
F U L L
L OW1 2
B00468

11-14 Maintenance and service
Turbo models
1) Filler neck
2) Fill up to this level
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.
Guideline of coolant quantity (including cool-
ant in reservoir tank):
Non-turbo models: MT. 7.4 US qt (7.0 liters, 6.2 Imp qt)
AT. 7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo models: MT. 8.1 US qt (7.7 liters, 6.8 Imp qt)
AT. 8.0 US qt (7.6 liters, 6.7 Imp qt)
1) “FULL ” level mark
2) “LOW ” level mark
6. Pour the coolant and fill to the reservoir
tank ’s “FULL ” level mark.
1) Rubber gaskets
7. Put the radiator cap back on and tight-
1
2
B00454
F U L L
L OW1 2
B00468
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 coolant gets on the
exhaust pipe, be sure to wipe it
off.
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 11-15
– CONTINUED –
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.
Air cleaner element
The air cleaner element functions as a fil-
ter screen. When the element is perforat-
ed or removed, engine wear will be exces-
sive and engine life shortened.
The air cleaner element is a viscous type.
It is unnecessary to clean or wash the ele-
ment.
Replacing the air cleaner ele-
ment
Replace the air cleaner element according
to the maintenance schedule in the “War-
ranty and Maintenance Booklet ”. Under
extremely dusty conditions, replace it
more frequently. It is recommended that
you always use genuine SUBARU parts.
Turbo models
1. Unsnap the two clamps holding the air
cleaner case cover.
2. Open the air cleaner case cover and
remove the air cleaner element.
Do not operate the engine with the
air cleaner element removed. The air
cleaner element not only filters in-
take air but also stops flames if the
engine backfires. If the air cleaner
element is not installed when the en-
gine backfires, you could be burned.B00024
B00025

11-36 Maintenance and service
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.
Washer fluid level gauge
Remove the washer tank filler cap, then
check the fluid level indicated by the level
gauge (attached to the inside of the cap).
If the level is near the “Low ” mark, add flu- id until it reaches the
“Hi ” level on the level
gauge or the “Full ” mark on the tank.
Use windshield washer fluid. If windshield
washer fluid is unavailable use clean wa-
ter.
In areas where water freezes in winter,
use an anti-freeze type windshield washer
fluid. SUBARU Windshield Washer Fluid
contains 58.5% methyl alcohol and 41.5%
surfactant, by volume. Its freezing temper-
ature varies according to how much it is di-
luted, as indicated in the following table.
In order to prevent freezing of washer flu-
id, check the freezing temperatures in the
table above when adjusting the fluid con-
centration to the outside temperature.
If you fill the reservoir tank with a fluid with
a different concentration from the one
300523
Hi
Low
300172
300173
Washer Fluid Con- centration Freezing Tempera-
ture
30% 10.4 F ( –12 C)
50% –4F ( –20 C)
100% –49 F ( –45 C)
Never use engine coolant as washer
fluid because it could cause paint
damage.