The 2009 Hyundai Sonata comes in two different engine configurations. While both require SAE 5W-20 synthetic or SAE 5W-30 synthetic motor oil, the smaller 2.4L 4Cylinder engine has a capacity of 4.5 quarts (4.4 liters), whereas the larger 3.3L V6 engine has a capacity of 5.5 quarts (5.2 liters). A note about oil type; it's recommended to always use the oil with the smallest values, as this represents a superior viscosity and operating temperature range. In this case, the SAE 5W-20 will keep Your engine running in top shape for longer, and may even help You get a few extra miles between gas fill ups. 5W-30 may be a little cheaper, but You'll pay in the long run.
Mara D.
January 2, 2020
Hyundai's approved oil grade is the 5W-20 detergent oil for the 2009 Hyundai Sonata. The 2009 Hyundai Sonata 2.4L engine oil capacity is 4.5 US quarts (4.4 liters) and the 3.3L engine oil capacity is 5.5 US quarts (5.2 liters).
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