Cooling system
Hyundai Sonata / Sonata 2011 Owners Manual / Maintenance / Explanation of scheduled maintenance items / Cooling system
Check cooling system components, such as radiator, coolant reservoir, hoses and connections for leakage and damage. Replace any damaged parts.
See also:
Driveshafts and Boots
Check the drive shafts, boots and clamps for cracks, deterioration, or damage.
Replace any damaged parts and, if necessary, repack the grease. ...
Change to "winter weight" oil if necessary
In some climates it is recommended that a lower viscosity "winter weight" oil
be used during cold weather. See section 8 for recommendations. If you aren't sure
what weight oil you s ...
97,500 miles (156,000 km) or 78 months
❑ Inspect air cleaner filter
❑ Inspect vacuum hose
❑ Replace engine oil and filter (97,500 miles (156,000 km) or 156 months) ...


