Coolant: Service and Repair

Engine Coolant

REPLACEMENT

DRAINING OF ENGINE COOLANT

1) Lift up the vehicle.
2) Remove the under cover.
3) Remove the drain plug to drain engine coolant into container.

NOTE:
Remove the radiator cap so that engine coolant will drain faster.





4) Install the drain plug.
5) Install the under cover.

FILLING OF ENGINE COOLANT

1) Pour cooling system conditioner from the filler neck of the radiator.

Cooling system protecting agent:
Refer to "SPECIFICATIONS" for cooling system protecting agent.

2) Pour engine coolant into the radiator up to the filler neck position.

Recommended engine coolant:
Refer to "SPECIFICATIONS" for recommended engine coolant.

Engine coolant concentration:
Refer to "ADJUSTMENT" for the recommended engine coolant concentration.

NOTE:
The SUBARU Super Coolant is especially made for SUBARU engine, which has an aluminum cylinder block, and contains anti-freeze and anti-rust agents. Always use SUBARU Super Coolant, since other coolant may cause corrosion.

3) Fill engine coolant into the reservoir tank up to "FULL" level.





4) Close the radiator cap and start the engine. Race 5 to 6 times at 3,000 rpm or less, then stop the engine. (Complete this operation within 40 seconds.)
5) Wait for one minute after the engine stops, and open the radiator cap. If the engine coolant level drops, add engine coolant into radiator up to the filler neck position.
6) Perform the procedures 4) and 5) again.
7) Attach the radiator cap and reservoir tank cap properly.
8) Start the engine and operate the heater at maximum hot position and the blower speed setting to "LO".
9) Run the engine at 2,000 rpm or less until radiator fan starts and stops.

NOTE:
Be careful with the engine coolant temperature gauge to prevent overheating.

10) Stop the engine and wait until the engine coolant temperature lowers to 30°C (86°F) or less.
11) Open the radiator cap. If the engine coolant level drops, add engine coolant into radiator up to the filler neck position and reservoir tank to the "FULL" level.
12) Attach the radiator cap and reservoir tank cap properly.
13) Set the heater setting to maximum hot position and the blower speed setting to "LO" and start the engine. Perform racing at 3,000 rpm or less. If the flowing sound is heard from heater core, repeat the procedures from step 9).

ADJUSTMENT

PROCEDURE TO ADJUST THE SUBARU SUPER COOLANT CONCENTRATION

CAUTION:
SUBARU Super Coolant concentration must be used from 50 to 60% to assure the best performance of the anti-freeze and anti-rust agents.

To adjust the concentration of SUBARU Super Coolant according to temperature, find the proper SUBARU Super Coolant concentration in the table, and add diluting water to the SUBARU Super Coolant (concentrated type) until it reaches the proper dilution.





Recommended engine coolant and water for dilution: