Page 482 of 572

Maintenance and service/Cooling system
Cooling system
WARNING
Never attempt to remove the radia-
tor 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 boil-
ing hot coolant when the cap is
removed.
CAUTION
.Vehicles are filled at the factory
with SUBARU Super Coolant that
does not require the first change
for 11 years/137,500 miles (11
years/220,000 km). This coolant
should not be mixed with any
other brand or type of coolant
during this period. Mixing with a
different coolant will reduce the
life of the coolant. Should it be
necessary to top off the coolant
for any reason, use only
SUBARU Super Coolant.
If the SUBARU Super Coolant is
diluted with another brand ortype, the maintenance interval is
shortened to that of the mixing
coolant.
.Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
&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
defective. Refer to“Temperature gauge”
F3-11.
Check the fuse and replace it if necessary.
Refer to“Fuses”F11-38 and“Fuses and
circuits”F12-10. 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 bechecked 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.
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.
11-14
Page 523 of 572
&Engine
Engine model
FB25
(2.5 L, DOHC, non-turbo)EZ36
(3.6 L, DOHC, non-turbo)
Engine type
Horizontally opposed, liquid cooled 4 cylinder,
4 stroke gasoline engineHorizontally opposed, liquid cooled 6 cylinder,
4 stroke gasoline engine
Displacement cu-in (cc) 152 (2,498) 221.5 (3,630)
Bore6Stroke in (mm) 3.7063.54 (94.0690.0) 3.6263.58 (92.0691.0)
Compression ratio 10.3 : 1 10.5 : 1
Firing order 1–3–2–41–6–3–2–5–4
&Fuel
Fuel requirement Fuel tank capacity
Unleaded gasolinewith87 AKI (90 RON) or higher18.5 US gal (70 liters, 15.4 Imp gal)Specifications/Specifications
–CONTINUED–
12-3
Page 527 of 572

&Manual transmission, front differential and rear differential gear oil
Oil Manual transmission oil Front differential gear oil (CVT models) Rear differential gear oil
Oil grade.SUBARU Extra MT*3
.API classification GL-5 (75W-90)*4API classification GL-5
SAE viscosity
No. and applic-
able tempera-
ture—.75W-90*
.90
*: Recommended
Oil capacity*
13.5 US qt
(3.3 liters, 2.9 Imp qt)2.5 L models: 1.3 US qt (1.2 liters, 1.1 Imp qt)
3.6 L models: 1.5 US qt (1.4 liters, 1.2 Imp qt)0.8 US qt (0.8 liters, 0.7 Imp qt)
Remarks*
2“Manual transmission
oil”F11-18“Front differential gear oil (CVT models) and
rear differential gear oil”F11-19“Front differential gear oil (CVT models) and rear differ-
ential gear oil”F11-19
*1: The indicated oil quantity is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other
factors. After refilling the gearbox with oil, the oil level should be checked.
*2: For more details about maintenance and service, refer to the indicated section.
*3: The vehicle is filled at the factory with this type of manual transmission oil/front differential gear oil.
*4: You may use this type of manual transmission oil/front differential gear oil. However, using this type of oil will detract from driveability and fuel
efficiency.Specifications/Specifications
–CONTINUED–
12-7