Hyundai Elantra HD: Engine coolant - Maintenance - Hyundai Elantra HD 2006–2010 Owners ManualHyundai Elantra HD: 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.

Changing the engine oil and filter
Have engine oil and filter changed by an authorized Hyundai dealer according to the Maintenance Schedule at the beginning of this section. PROPOSITION 65 WARNING Engine oil contains chemicals kn ...

Checking the coolant level
WARNING - Removing radiator cap Never attempt to remove the radiator cap while the engine is operating or hot. Doing so might lead to cooling system and engine damage and could result i ...