When equipped with the 1.4-liter engine, the 2016 kia optima gets4.5 liters (4.8 quarts) of 5w-20 oil. the 2.0 - and 2.4-liter engines both get 4.8 liters (5.1 quarts) of fluid with the same viscosity. sae 5w-20 is a synthetic fluid. so unlike non-synthetic varieties that need to be changed every 3,000 miles or so, the oil lasts a lot longer. kia recommends replacing it every 7,500 miles, but you may need it done more frequently depending on your driving habits. the average cost to have this fluid changed in your 2016 optima is $ 110 to $ 130. labor generally makes up about $ 30 to $ 50 of that expense, so if you change it yourself, you can save a bit of money. if you do this, make sure you reset your oil life light when you're done.
The 2016 kia optima's preferred oil type is a full synthetic sae 5w-20 motor oil. the oil capacity for the car varies by engine. the 1.4l engine can hold 4.8e quarts, while the 2.4 l and 2.0l engines can hold 5.1 quarts.
Why synthetic oil
Because it can clog or damage vvt accurators