SUBARU LEGACY 2016 6.G Owners Manual

CAUTION
.For 2.5 L models, be careful not
to touch the engine oil filter when
removing the oil filler cap. Doing
so may result in a burn, a
pinched finger, or may cause
some other injury.
.Use only engine oil with the
recommended grade and vis-
cosity.
.Be careful not to spill engine oil
when adding it. If oil touches the
exhaust pipe, it may cause a bad
smell, smoke, and/or a fire. If
engine oil gets on the exhaust
pipe, be sure to wipe it off.
.If the level gauge cannot be
pulled out easily, twist the level
gauge right and left, then gently
pull it out. Otherwise, you may be
injured by accidentally straining
yourself.
To add engine oil, remove the engine oil
filler cap and slowly pour engine oil
through the filler neck. After pouring oil
into the engine, you must use the level
gauge to confirm that the oil level is
correct.
NOTE
To prevent overfilling the engine oil, do
not add any additional oil above the full
level when the engine is cold.
&Changing the oil and oil filter
Change the oil and oil filter according to
the maintenance schedule in the“War-
ranty and Maintenance Booklet”.
NOTE
.Changing the engine oil and oil filter
should be performed by a well-trained
expert. Contact your SUBARU dealer
for changing the engine oil and oil filter.
Fully trained mechanics are on standby
at a SUBARU dealer to utilize the
special tools, spare parts and recom-
mended oil for this work, and also,
used oils are properly disposed of.
.If performing oil replacement your-
self, observe the local regulations and
dispose of waste oil properly.
&Recommended grade and
viscosity
CAUTION
Use only engine oil with the recom-
mended grade and viscosity.Refer to“Engine oil”F12-4.
NOTE
Engine oil viscosity (thickness) 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 en-
gine.
&Synthetic oil
You should use synthetic engine oil that
meets the same requirements given for
conventional engine oil. When using
synthetic oil, you must use oil of the same
classification, viscosity and grade shown
in this Owner’s Manual. Refer to“Engine
oil”F12-4. Also, you must follow the oil
and filter changing intervals shown in the
Warranty and Maintenance booklet.
NOTE
Synthetic oil of the grade and viscosity
noted in chapter 12 is the recom-
mended engine oil for optimum engine
performance. Conventional oil may be
used if synthetic oil is unavailable.
Maintenance and service/Engine oil11-13

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

CAUTION
.Be careful not to spill engine
coolant 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.
!Changing the coolant
It may be difficult to change the coolant.
Have the coolant changed by your
SUBARU dealer if necessary.
The coolant should be changed according
to the maintenance schedule in the
“Warranty and Maintenance Booklet”.
Air cleaner element
WARNING
Do not operate the engine with the
air cleaner element removed. The air
cleaner element not only filters
intake air but also stops flames if
the engine backfires. If the air
cleaner element is not installed
when the engine backfires, you
could be burned.
CAUTION
When replacing the air cleaner ele-
ment, use a genuine SUBARU air
cleaner element. If it is not used,
there is the possibility of causing a
negative effect to the engine.
The air cleaner element functions as a
filter screen. When the element is perfo-
rated or removed, engine wear will be
excessive and engine life shortened.
The air cleaner element is a dry type. It is
unnecessary to clean or wash the ele-
ment.
&Replacing the air cleaner
element
Replace the air cleaner element according
to the maintenance schedule in the
“Warranty and Maintenance Booklet”. Un-
der extremely dusty conditions, replace it
more frequently. It is recommended that
you always use genuine SUBARU parts.
!2.5 L models
1) Clip
1. Unsnap the two clips holding the air
cleaner case (rear).
Maintenance and service/Air cleaner element
–CONTINUED–11-15

Maintenance and service/Air cleaner element
2. Open the air cleaner case.
3. Remove the air cleaner element.
CAUTION
If the inside of the air cleaner case is
extremely soiled (for example, by
sand), contact a SUBARU dealer
and have the air cleaner case
cleaned.
4. If you find large foreign objects such
as leaves inside the air cleaner case,
remove the foreign objects.
5. Install a new air cleaner element in the
way the longitudinal side and the trans-
verse side face as shown in the illustra-
tion.
6. To install the air cleaner case (rear),
insert the three projections on the air
cleaner case (rear) into the slits on the
air cleaner case (front).
7. Install in the reverse order of removal.
11-16

!3.6 L models
1) Clips
1. Unsnap the two clips holding the air
cleaner case (rear).
2. Open the air cleaner case and removethe air cleaner element.
CAUTION
If the inside of the air cleaner case is
extremely soiled (for example, by
sand), contact a SUBARU dealer
and have the air cleaner case
cleaned.
3. If you find large foreign objects such
as leaves inside the air cleaner case,
remove the foreign objects.
4. Install a new air cleaner element in the
way the longitudinal side and the trans-
verse side face as shown in the illustra-
tion.
5. To install the air cleaner case (rear),
insert the three projections on the air
cleaner case (rear) into the slits on the
air cleaner case (front).
6. Install the removed parts in the reverse
order of removal.
Maintenance and service/Air cleaner element11-17

Maintenance and service/Spark plugs
Spark plugs
It may be difficult to replace the spark
plugs. It is recommended that you have
the spark plugs replaced by your
SUBARU dealer.
The spark plugs should be replaced
according to the maintenance schedule
in the“Warranty and Maintenance Book-
let”.
&Recommended spark plugs
Refer to“Electrical system”F12-9.
Drive belts
It is unnecessary to check the deflection of
the drive belt periodically because your
engine is equipped with an automatic belt
tension adjuster. However, replacement of
the belt should be done according to the
maintenance schedule in the“Warranty
and Maintenance Booklet”. Consult your
SUBARU dealer for replacement.
If the belt is loose, cracked or worn,
contact your SUBARU dealer.
Manual transmission oil
It is unnecessary to check the manual
transmission oil level. However, if neces-
sary, consult your SUBARU dealer for
inspection.
&Recommended grade and
viscosity
Each oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”F12-7.
11-18

Continuously variable trans-
mission fluid
There is no fluid level gauge. It is
unnecessary to check the continuously
variable transmission fluid level. However,
if necessary, consult your SUBARU dealer
for inspection.
Front differential gear oil
(CVT models) and rear differ-
ential gear oil
It is not necessary to check the gear oil
level. Check that there are no cracks,
damage or leakage. However, the oil
inspection should be performed according
to the maintenance schedule in the
“Warranty and Maintenance Booklet”.
Consult your SUBARU dealer for details.
&Recommended grade and
viscosity
Each oil manufacturer has its own base
oils and additives. Never use different
brands together. For details, refer to
“Manual transmission, front differential
and rear differential gear oil”F12-7.
CAUTION
Using a differential gear oil other
than the specified oil may cause a
decline in vehicle performance.
Brake fluid
&Checking the fluid level
WARNING
.Never let brake fluid contact your
eyes because brake fluid can be
harmful to your eyes. If brake
fluid gets in your eyes, immedi-
ately flush them thoroughly with
clean water. For safety, when
performing this work, wearing
eye protection is advisable.
.Brake fluid absorbs moisture
from the air. Any absorbed moist-
ure can cause a dangerous loss
of braking performance.
.If the vehicle requires frequent
refilling, there may be a leak. If
you suspect a problem, have the
vehicle checked at your SUBARU
dealer.
CAUTION
.When adding brake fluid, be care-
ful not to allow any dirt into the
reservoir.
.Never splash the brake fluid over
painted surfaces or rubber parts.
Maintenance and service/Continuously variable transmission fluid
–CONTINUED–11-19

Maintenance and service/Brake fluid
Alcohol contained in the brake
fluid may damage them.
.Be careful not to spill brake fluid
when adding it. If brake fluid
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If brake fluid gets on the
exhaust pipe, be sure to wipe it
off.
The reservoir has two chambers, one for
clutch fluid and the other for brake fluid.
Each fluid level must therefore be checked
in the appropriate chamber. Check the
fluid level on the outside of the reservoir
monthly.
3.6 L models
1)“MAX”level line
2)“MIN”level line
A) The brake fluid level must be checked in
this area.
For 3.6 L models,be sure to check the
brake fluid level on theoutboard side of
the reservoir(shaded area in the illustra-
tion). It cannot be checked on the inboard
side of the reservoir. If the fluid level is
below“MIN”, add the recommended brake
fluid to“MAX”. Use only brake fluid from a
sealed container.
2.5 L models
1)“MAX”level line
2)“MIN”level line
A) The brake fluid level must be checked in
this area.
For 2.5 L models,be sure to check the
brake fluid level at thefront part of the
reservoir(shaded area in the illustration).
If the fluid level is below“MIN”, add the
recommended brake fluid to“MAX”. Use
only brake fluid from a sealed container.
11-20

&Recommended brake fluid
Refer to“Fluids”F12-8.
CAUTION
Never use different brands of brake
fluid together. Also, avoid mixing
DOT 3 and DOT 4 brake fluids even if
they are the same brand.
Clutch fluid (MT models)
&Checking the fluid level
WARNING
Never let clutch fluid contact your
eyes because clutch fluid can be
harmful to your eyes. If clutch fluid
gets in your eyes, immediately flush
them thoroughly with clean water.
For safety, when performing this
work, wearing eye protection is
advisable.
CAUTION
.Clutch fluid absorbs moisture
from the air. Any absorbed moist-
ure can cause improper clutch
operation.
.If the vehicle requires frequent
refilling, there may be a leak. If
you suspect a problem, have the
vehicle checked at your SUBARU
dealer.
.When clutch fluid is added, be
careful not to allow any dirt into
the tank.
.Never splash the clutch fluid over
painted surfaces or rubber parts.Alcohol contained in the clutch
fluid may damage them.
.Be careful not to spill clutch fluid
when adding it. If clutch fluid
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If clutch fluid gets on the
exhaust pipe, be sure to wipe it
off.
.The fluid level for the clutch
system must be checked at the
inboard side of the reservoir. It
cannot be checked at the out-
board side of the reservoir.
1)“MAX”level line
2)“MIN”level line
A) The clutch fluid level must be checked in
this area. Maintenance and service/Clutch fluid (MT models)
–CONTINUED–
11-21

Maintenance and service/Brake booster
Check the fluid level monthly.
Check the fluid level on the outside of the
reservoir. Because this reservoir is used
for both the brake and clutch systems and
has chambers for each system, be sure to
check the fluid level for the clutch system
at theinboard side of the reservoir
(shaded area in the illustration). If the fluid
level is below“MIN”, add the recom-
mended clutch fluid to“MAX”.
Use only clutch fluid from a sealed
container.
&Recommended clutch fluid
Refer to“Fluids”F12-8.
CAUTION
Never use different brands of clutch
fluid together. Also, avoid mixing
DOT 3 and DOT 4 brake fluids even if
they are the same brand.
Brake booster
If the brake booster does not operate as
described in the following procedure, have
it checked by your SUBARU dealer.
1. With the engine off, depress the brake
pedal several times, applying the same
pedal force each time. The distance the
pedal travels should not vary.
2. With the brake pedal depressed, start
the engine. The pedal should move
slightly down to the floor.
3. With the brake pedal depressed, stop
the engine and keep the pedal depressed
for 30 seconds. The pedal height should
not change.
4. Start the engine again and run for
approximately 1 minute then turn it off.
Depress the brake pedal several times to
check the brake booster. The brake
booster operates properly if the pedal
stroke decreases with each depression.
Brake pedal
Check the brake pedal free play and
reserve distance according to the main-
tenance schedule in the“Warranty and
Maintenance Booklet”.
&Checking the brake pedal
free play
1) 0.02–0.11 in (0.5–2.7 mm)
Stop the engine and firmly depress the
brake pedal several times. Lightly pull the
brake pedal up with one finger to check
the free play with a force of less than 2 lbf
(10 N, 1 kgf).
If the free play is not within proper
specification, contact your SUBARU deal-
er.
11-22