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In 2009, the Hyundai Elantra requires SAE 5w-20 full synthetic oil with a capacity of 4.2 quarts. This oil is essential for keeping the engine internal parts cool and lubricated, preventing wear and damage by reducing friction between moving parts. For an Elantra oil change, labor costs range from $50 to $70 and parts cost between $70 and $80. It is recommended to change the oil every 5,000 miles. Signs that indicate an oil change is needed include engine noises, transmission issues, idling vibration, exhaust smoke, reduced fuel efficiency, or seeing the Check Engine or Oil Change lights illuminate.
For optimal performance, it's best to go with 5W-20 synthetic oil in your 2009 Hyundai Elantra. However, if needed, 5W-30 synthetic oil is also acceptable. In colder weather, consider using 10W-30 (for temperatures above 0°F), 15W-40 (for temperatures above 9°F), or 20W-50 (for temperatures above 19°F).