Cooling System: Service and Repair
Engine CoolantREPLACEMENT
DRAINING OF ENGINE COOLANT
1) Set the vehicle on a lift.
2) Lift up the vehicle.
3) Remove the under cover RH.
4) Remove the drain plug (A) to drain engine coolant into container.
NOTE:
Remove the radiator cap so that engine coolant will drain faster.
5) Install the drain plug.
6) Install the under cover RH.
FILLING OF ENGINE COOLANT
1) Pour cooling system conditioner through the filler neck.
2) Pour engine coolant into the radiator up to the filler neck position.
Recommended engine coolant:
NOTE:
The SUBARU Super Coolant contains anti-freeze and anti-rust agents, and is especially made for Subaru engines with an aluminum cylinder block. 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 drops to 30°C (86°F) or less.
11) Open the radiator cap. If the engine coolant level drops, add engine coolant into the radiator up to the filler neck position and the reservoir tank to "FULL" level.
12) Attach the radiator cap correctly.
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 at this time, perform the procedures from 9) again.
ADJUSTMENT
PROCEDURE TO ADJUST THE SUBARU SUPER COOLANT CONCENTRATION
CAUTION:
Use the SUBARU Super Coolant with a 50 - 60% concentration in order to obtain maximum anti-freeze and anti-rust performance.
To adjust the concentration of SUBARU Super Coolant according to temperature, find the proper SUBARU Super Coolant concentration in the table, and add dilution water to the SUBARU Super Coolant (concentrated type) until it reaches the proper dilution.
