Hyundai GENESIS COUPE BK 2010 Manual page 141

1. Make sure the engine and radiator are cool to the touch.
2. Remove the radiator cap.
3. Loosen the drain plug, and drain the coolant.
4. Tighten the radiator drain plug securely.
5. Remove, drain and reinstall the reservoir. Fill the tank halfway to the MAX mark with water, then up to the MAX
mark with antifreeze.
6. Fill the radiator with water through the radiator cap and tighten the cap.
To most effectively bleed the air, pour the water slowly and press on the upper / lower radiator hoses.
7. Start the engine and allow to come to normal operating temperature. Wait for the cooling fans to turn on several
times. Accelerate the engine to aid in purging trapped air. Shut engine off.
8. Wait until the engine is cool.
9. Repeat steps 1 to 8 until the drained water runs clear.
10. Fill fluid mixture with coolant and water(5 : 5) (Tropical region – 4:6) slowly through the radiator cap. Push the
upper/lower hoses of the radiator so as bleed air easily.
• Use only genuine antifreeze/coolant.
• For best corrosion protection, the coolant concentration must be maintained year-round at 35% minimum.
Coolant concentrations less than 35% may not provide sufficient protection against corrosion or freezing.
• Coolant concentrations greater then 60% will impair cooling efficiency and are not recommended.
• Do not mix different brands of antifreeze/coolants.
• Do not use additional rust inhibitors or antirust products; they may not be compatible with the coolant.
11. Start the engine and run coolant circulates.
12. When the cooling fan operates and coolant circulates, refill coolant through the radiator cap.
13. Repeat step.11 until the cooling fan 3 ~ 5times and bleed air sufficiently out of the cooling system.
14. Install the radiator cap and fill the reservoir tank to the "MAX" line with coolant.
15. Run the vehicle under idle until the cooling fan operates 2 ~ 3 times.
16. Stop the engine and wait coolant gets cool.
17. Repeat 10 to 15 until the coolant level doesn't fall any more, bleed air out of the cooling system.
As it is to bleed air out to the cooling system and refill coolant when coolant gets cool completely, recheck the
coolant level in the reservoir tank for 2 ~ 3 days after replacing coolant.
Coolant capacity :
9.0L ( 9.5Us.qts, 7.9lmp.qts)