PM-15
Engine Coolant
PERIODIC MAINTENANCE SERVICES
2. RELATIONSHIP OF SUBARU COOLANT
CONCENTRATION AND FREEZING TEM-
PERATURE
The concentration and safe operating temperature
of SUBARU coolant is shown in the diagram. Mea-
suring 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 coolant according to
temperature, find the proper fluid concentration in
the above diagram and replace the necessary
amount of coolant with an undiluted solution of
SUBARU genuine coolant (concentration 50%).
The amount of engine coolant that should be re-
placed can be determined using the diagram.
[Example]
Assume that the engine coolant concentration must
be increased from 25% to 40%. Find point A, where
the 25% line of engine coolant concentration inter-
sects with the 40% curve of the necessary engine
coolant concentration, and read the scale on the
vertical axis of the graph at height A. The quantity
of coolant to be drained is 2.12;(2.2 US qt, 1.8 Imp
qt). Drain 2.1 2(2.2 US qt, 1.8 Imp qt) of coolant
from the cooling system and add 2.1 2(2.2 US qt,
1.8 Imp qt) of the undiluted solution of SUBARU
coolant.
If a coolant concentration of 50% is needed, drain
all the coolant and refill with the undiluted solution
only.
CO-02172
60%
(1.054)
1.000
1.010
1.020
1.030
1.040
1.050
1.060
1.070
1.080
1.090
1.100
Safe operating temperature
Freezingtemperature
Concentrationof coolant
Specific gravityof coolant
Coolant temperature
B
A
C
-40(-40) (-22)(-4)(14)(32)(50) (68) (86)
( F)
(104)-30-20 -10010203040
(77 F)
50%
40%
30%
20%
25 C
10%
C
CO-00012
100
1
2
3
(1.1, 0.9)
(2.1, 1.8)
(3.2, 2.6)
10%15%
25%20%
30%
35%40%
45%A
20 30 40 50
Concentration of coolant in vehicieand quantity to be drained
Quantity of coolant to bedrained (US qt, Imp qt)
Necessary Concentrationof coolant
Concentration of coolant inthe vehicie cooling system %
5AT-3
General Description
AUTOMATIC TRANSMISSION
8. COOLING AND HARNESS
9. TRANSFER
10.FINAL REDUCTION GEAR
11.RECOMMENDED GEAR OIL
Cooling systemLiquid-cooler incorporated in
radiator
Tr a n s m i s s i o n h a r n e s s 2 0 + 8 p o l e s
Tr a n s f e r t y p eVa r i a b l e t o r q u e d i s t r i b u t i o n
(VTD)
Number of transfer clutch
drives & driven plates4
Reduction gear ratio 1.000 (41/41)
Fr o nt f in a l r e du ct i o n g ea r
ratio3.583
Lubrication oil
(1) Item (3) API standard
(2) Front differential gear oil (4) SAE viscosity No. and applicable
temperature
Fr o nt d if fer e nt i a l g ea r oi l c a pa ci t y
2(US qt, Imp qt)1.3 — 1.5 (1.4 — 1.6, 1.1 — 1.3)
MT-00001
(1)
(4)GL-5(3)
(2)
( C)( F)-30 -26 -15 15
9085W80W75W -90
25 30 -5 0-22-1523328659775
