13. Coolant
SA07689
A: REPLACEMENT
SA07689A20
1. REPLACEMENT OF COOLANT
SA07689A2001
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) Fit vinyl tube to drain pipe.
4) Place a container under drain tube.
5) Loosen drain cock to drain engine coolant into container.
6) For quick draining, open radiator cap.
CAUTION:
Be careful not to spill coolant on the floor.
7) Drain coolant from reservoir tank.
8) Tighten radiator drain screw securely after draining coolant.
9) Install reservoir tank to original position.
10) Non-TURBO model.
(1) Slowly pour prepared coolant from radiator filler port to neck of filler, then pour into reservoir tank up to "FULL" level.
Coolant capacity (fill up to "FULL" level) MT model:
Approx. 6.4 J (6.8 US qt, 5.6 Imp qt) AT model:
Approx. 6.3 J (6.7 US qt, 5.5 Imp qt)
NOTE:
The SUBARU Genuine Coolant containing antifreeze 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.
(2) Securely install radiator cap.
(3) 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.)
(4) 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.
(5) After adding coolant, securely install radiator and reservoir tank caps.
11) TURBO model.
(1) Slowly pour prepared coolant from coolant flow tank filler port up to the brim of port, and install cap, then pour coolant into reserve tank up to "FULL" level.
(2) Run engine for about 15 minutes, not exceeding 2,000 rpm. (Run engine until radiator becomes hot in order to purge air trapped in cooling system.)
(3) Stop engine and wait until coolant temperature lowers. [below 50°C (122°F) or 60°C (140°F)] Open coolant flow tank cap and add coolant up to the brim of the port.
(4) Wait until coolant temperature lowers further [below 30°C (86°F)], then pour into reserve tank up to the "FULL" level.
(5) Run the vehicle until the coolant temperature rises to 80°C (176°F) and check the level in the coolant flow tank, add coolant up to the "FULL" level.
Coolant capacity (fill up to "FULL" level) MT model
Approx. 6.41 (6.8 US qt, 5.6 Imp qt) AT model
Approx. 6.3J (6.7 US qt, 5.5 Imp qt)
COOLANT
2. RELATIONSHIP OF SUBARU COOLANT CONCENTRATION AND FREEZING TEMPERATURE
3. PROCEDURE TO ADJUST THE CONCENTRATION OF THE COOLANT
SA07689A2002
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).
SA07689A2003
To adjust the concentration of the 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 coolant that should be replaced can be determined using the diagram. [Example]
Assume that the coolant concentration must be increased from 25% to 40%. Find point A, where the 25% line of coolant concentration intersects with the 40% curve of the necessary coolant concentration, and read the scale on the vertical axis of the graph at height A. The quantity of coolant to be drained is 2.1 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 coolant.
If a coolant concentration of 50% is needed, drain all the coolant and refill with the undiluted solution only.
