Hyundai Elantra: Engine coolant - Maintenance - Hyundai Elantra HD 2006Ц2010 Owners ManualHyundai Elantra: Engine coolant

The high-pressure cooling system has a reservoir filled with year-round antifreeze coolant. The reservoir is filled at the factory.

Check the antifreeze protection and coolant level at least once a year, at the beginning of the winter season, and before traveling to a colder climate.