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The 2011 Kia Optima is equipped with either a 2.0 L 4-cylinder or a 2.4 L 4-cylinder engine, both requiring 4.9 quarts of oil with a filter. Recommended oil types include SAE 5W-40 FS Synthetic for the 2.0 L 4-cylinder and 5W-20 Synthetic or SAE 5W-30 for the 2.4 L 4-cylinder engine. Oil is crucial for engine cleanliness and lubrication to reduce friction between moving parts. It's advisable to change the oil every 7,500 miles in the Optima, along with replacing the filter at the same time. The estimated labor costs for an oil change range from $20 to $30.
For the 2011 Kia Optima, it is advised to use SAE 5W-40 engine oil for the 2.0L engine and SAE 5W-20 engine oil for the 2.4L engine. Both the 2.0L and 2.4L engines of the 2011 Kia Optima have an oil capacity of 4.9 quarts (4.6 liters).
I recently installed a new catalytic converter, and I'm contemplating trading in my car due to potential engine bearing wear at 180,000 miles. The vehicle is currently in good condition.