Cooling System: Service and Repair

DRAINING AND REFILLING
Before draining the cooling system, inspect the system and perform any necessary service to ensure that it is clean, does not leak and is in proper working order. The Engine Coolant (EC) level should be between the "MIN" and "MAX" lines of reserve tank when the engine is cold. If low, check for leakage and add coolant up to the "MAX" line. There should not be any excessive deposit of rust or scales around the radiator cap or radiator filler hole, and the EC should also be free from oil. Replace the coolant if excessively dirty.
1. Completely drain the cooling system by opening the drain petcock at the bottom of the radiator.
2. Remove radiator cap.

WARNING: To avoid the danger of being burned, do not remove the cap while the engine and radiator are still hot. Scalding fluid and steam can be blown out under pressure.

3. Disconnect all hoses from the EC reserve tank Remove the reserve tank and pour out any fluid. Scrub and clean the inside of the reserve tank with soap and water. Flush it well with clean water, then drain it. Install the reserve tank and hoses.
4. Refill the cooling system with the EC using a solution that is at least 50 percent antifreeze but no more than 70% antifreeze.
5. Fill the radiator to the base of the filler neck. Fill the EC reserve tank to between the "MAX" and "MIN" lines when the engine is cold.
6. Block the drive wheels and firmly apply the parking brake. Shift an automatic transmission to "P" (Park) or a manual transmission to neutral. Run the engine, with the radiator cap removed, until the upper radiator hose is hot.
7. With the engine idling, add EC to the radiator until full. Install the radiator cap.
8. Allow the engine to cool down to outside air temperature and check the coolant level in the coolant reservoir. If necessary, add EC until the level reaches the "MAX" mark on the reservoir.