Subaru Legacy III (2000-2003 year). Manual - part 18

PM-22

PERIODIC MAINTENANCE SERVICES

COOLANT

12.Coolant

A: REPLACEMENT

1. REPLACEMENT OF COOLANT

WARNING:
The radiator is of the pressurized type. Do not
attempt to open the radiator cap immediately
after the engine has been stopped.

1) Lift up the vehicle.
2) Remove under cover.
3) Place a container under drain pipe.
4) Loosen and remove drain screw to drain engine
coolant into container. 
Except 3.0 L model

3.0 L model

5) For quick draining, open radiator cap.

CAUTION:
Be careful not to spill coolant on the floor.
6) Drain coolant from reservoir tank.
7) Tighten radiator drain screw securely after drain-
ing coolant.

8) Slowly pour prepared coolant from radiator filler
port to neck of filler, then pour into reservoir tank up
to “FULL” level.

Coolant amount for preparation

2.0 L non-turbo and 2.5 L models

MT model:

Approx. 6.8 

2

 (7.2 US qt, 6.0 Imp qt)

AT model:

Approx. 6.7 

2

 (7.1 US qt, 5.9 Imp qt)

2.0 L turbo model

MT model:

Approx. 7.7 

2

 (8.1 US qt, 6.8 Imp qt)

AT model:

Approx. 7.6 

2

 (8.0 US qt, 6.7 Imp qt)

3.0 L model

Approx. 7.9 

2

 (8.4 US qt, 7.0 Imp qt)

NOTE:
The SUBARU Genuine Coolant containing anti-
freeze and anti-rust agents is especially made for
SUBARU engine, which has an aluminum crank-
case. Always use SUBARU Genuine Coolant,
since other coolant may cause corrosion.
9) Securely install radiator cap.
10) Run engine for more than five minutes at 2,000
to 3,000 rpm. (Run engine until radiator becomes
hot in order to purge air trapped in cooling system.)
11) Stop engine and wait until coolant temperature
lowers. Then open radiator cap to check coolant
level and add coolant up to radiator filler neck.
Next, add coolant into reservoir tank up to “FULL”
level.
12) After adding coolant, securely install radiator
and reservoir tank caps.

PM-00129

PM-00130

PM-23

PERIODIC MAINTENANCE SERVICES

COOLANT

2. RELATIONSHIP OF SUBARU COOLANT 
CONCENTRATION AND FREEZING TEM-
PERATURE

The concentration and safe operating temperature
of the SUBARU coolant is shown in the diagram.
Measuring the temperature and specific gravity of
the coolant will provide this information.
[Example]
If the coolant temperature is 25

°

C (77

°

F) and its

specific gravity is 1.054, the concentration is 35%
(point A), the safe operating temperature is 

−

14

°

C

(7

°

F) (point B), and the freezing temperature is 

−

20

°

C (

−

4

°

F) (point C).

3. PROCEDURE TO ADJUST THE CON-
CENTRATION OF THE COOLANT

To adjust the concentration of the coolant accord-
ing to temperature, find the proper fluid concentra-
tion in the above diagram and replace the
necessary amount of coolant with an undiluted so-
lution of SUBARU genuine coolant (concentration
50).
The amount of coolant that should be replaced can
be determined using the diagram.
[Example]
Assume that the coolant concentration must be in-
creased from 25% to 40%. Find point A, where the
25% line of coolant concentration intersects with
the 40% curve of the necessary coolant concentra-
tion, and read the scale on the vertical axis of the
graph at height A. The quantity of coolant to be
drained is 2.1 liters (2.2 US qt, 1.8 Imp qt). Drain
2.1 liters (2.2 US qt, 1.8 Imp qt) of coolant from the
cooling system and add 2.1 liters (2.2 US qt, 1.8
Imp qt) of the undiluted solution of SUBARU cool-
ant.
If a coolant concentration of 50% is needed, drain
all the coolant and refill with the undiluted solution
only.

PM-00131

1.100

Specific gravity of coolant

Safe operating temperature

Concentration
of coolant

A

B

C

Freezing
temperature

Coolant temperature ˚C (˚F) 

1.090

1.080

1.070

1.060

1.050

1.040

1.030

1.020

1.010

1.000

60%

50%

40%

30%

20%

10%

_40

_20

_30

_10

40 50

20 30

10

0

(_40)(_22)(_4)(14) (32) (50) (68)(86)(104)(122)

(1.054)

25

˚C

(77

˚F)

PM-00132

Necessary concentration
of coolant

(3.2, 2.6)

(2.1, 1.8)

(1.1, 0.9)

3

2

1

10

20

30

40

50

0

15%

10%

20%

25%

30%

35%

40%

45%

A

Concentration of coolant in the vehicle
cooling system %

Concentration of coolant in vehicle
and quantity to be drained

Quantity of coolant to be drained   (US qt, lmp qt)

PM-24

PERIODIC MAINTENANCE SERVICES

CLUTCH SYSTEM

13.Clutch System

A: INSPECTION AND ADJUSTMENT

1) Push the release lever to retract the push rod of
the operating cylinder and check if the fluid level in
the clutch reservoir tank rises or not. 
• Non-turbo model

• Turbo model

2) If the fluid level rises, pedal free play is correct.
3) If the fluid level does not rise, or the push rod
cannot be retracted, adjust the clutch pedal. <Ref.
to CL-33, Clutch Pedal.>
4) Inspect the underside of master cylinder, clutch
damper and operating cylinder for clutch system,
hoses, piping and their couplings for fluid leaks.
If fluid leaks are found, correct them by retightening
their fitting bolt and/or replacing their parts.

5) Check the fluid level using the scale on the out-
side of the clutch master cylinder tank (A). If the lev-
el is below “MIN” (B), add clutch fluid to bring it up
to “MAX” (C).

Recommended clutch fluid:

FMVSS No. 116, fresh DOT3 or DOT4 brake 
fluid

NOTE:
• Avoid mixing different brakes of brake fluid to
prevent degradation of the fluid.
• Be careful not to allow dirt or dust to get into the
reservoir tank.

(A) Release lever

(B) Push rod

(C) Operating cylinder

(A) Release lever

(B) Push rod

(C) Operating cylinder

PM-00075

( A )

( C )

( B )

PM-00101

( A )

( C )

( B )

(A) Reservoir tank

(B) MIN. level

(C) MAX. level

PI-00099

( A )

( B )

( C )

PM-25

PERIODIC MAINTENANCE SERVICES

HILL-HOLDER SYSTEM

14.Hill-holder System

A: INSPECTION AND ADJUSTMENT

1) Confirm stopping and starting performance by
activating hill-holder on an uphill road of 3

°

 or high-

er inclination.

(1) When vehicle does not stop; 
Tighten adjusting nut of PHV cable.
(2) When vehicle does not start properly;
A; When hill-holder is released later than en-
gagement of clutch (engine tends to stall): Loos-
en adjusting nut gradually until smooth starting
is enabled.
B; When hill-holder is released earlier than en-
gagement to clutch (vehicle slips down slightly):
Tighten adjusting nut so that hill-holder is re-
leased later than engagement of clutch (status
in A). Then make adjustment the same as in A.

NOTE:
• Whenever turning adjusting nut, hold inner cable
with pliers to prevent it from turning.
• Replace pressure hold valve (PHV), return
spring of PHV or PHV cable with new one, if they
are defective and/or damaged.

(A) Lock nut

(B) Adjusting nut

(C) Pressure hold valve

PM-00077

( A )

( B )

( C )