What is the oil capacity for a 2015 Kia Optima?

The 2015 Kia Optima is available in five different setups, with the choice of two different engines: a 2.0L or a 2.4L 4-cylinder. Both engine options require 5.1 quarts of oil. The 2.0L engine needs SAE 5W-30 full synthetic motor oil, but using SAE 5W-40 conventional oil temporarily is acceptable. The 2.4L engine, on the other hand, calls for SAE 5W-20 full synthetic oil, with SAE 5W-30 being an alternative option. It is highly recommended to go with the first oil type mentioned because of its superior viscosity levels. Lower viscosity numbers generally help your engine run more efficiently, reducing friction and preventing early wear and tear. Investing a little extra in the recommended oil now can prolong the life of your engine and ultimately give you more years of enjoyment with your Optima.