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In the 2009 Hyundai Sonata, the oil capacity for the 2.4L engine is 4.5 quarts or 4.2 liters, and for the 3.3L V6 engine, it is 5.5 quarts or 5.1 liters, as indicated in the owner's manual. When changing the oil, always remember to replace the filter and check the oil level using the dipstick. The recommended oil for this car is SAE 5w-20 synthetic blend. It is advised to change the engine oil and filter every 3000-5000 miles to maintain peak performance. Neglecting oil changes can lead to a decrease in viscosity, causing ineffective lubrication of crucial engine components like pistons and cylinders. Keeping up with oil changes is essential, which is why cars now have oil lights in the dashboard to remind drivers.
The 2009 Hyundai Sonata with the 2.4L engine needs 4.54 quarts of oil, while those with the 3.3L engine require 5.49 quarts.