Draining Coolant and Flushing the Cooling System

1. Drain and discard the existing coolant in the engine, radiator, and coolant reservoir, via the radiator drain plug.

WARNING:
The coolant may be hot.

2. Loosen the hose clip and disconnect the bottom hose to assist in draining trapped coolant.

3. Reinstall the bottom hose and hose clip.

4. Refill the cooling system with PLAIN CLEAN water. Do NOT reinstall the pressure cap.

5. Start and run the engine at 2000 rpm for 5 minutes, with climate controls set to AUTO and temperature setting set to HI. Top off with plain clean water if necessary as air is purged from the cooling system.

6. Drain and discard the water as above.

WARNING:
The water will be hot.

7. Again refill the cooling system with plain clean water as above, run the engine at approximately 2000 rpm for 5 minutes with the Climate controls set as previously, and again drain the water.

WARNING:
The water will be hot.

8. Reinstall the radiator drain plug and reconnect the bottom hose.
Do not yet refill the cooling system, which at this point has been drained of the original coolant, and then flushed twice with plain water.