The 2015 kia optima uses sae 5w-30 full synthetic oil. it has a capacity of 5.1 quarts. oil keeps the internal parts of your engine lubricated and it also removes dirt, sludge, and other impurities which will keep your vehicle running smoothly. the cost of an oil change for your optima is between $ 50 and $ 60 for labor and $ 80 for parts. you should get an oil change every 3,000 to 5,000 miles or 6 months, whichever comes first.. signs that it's time for an oil change include a ticking sound coming from the engine, transmission shifting issues, shaking while idling, exhaustsmoke, poor fuel economy, and of course if you see the check engine or oil change lights come on.
The type of oil used by the 2015 kia optima on the 2.0l 4 cylinder engine is a synthetic at se 5w-30 or 5w-40. the 2.0l 4 cylinder engine prefers synthetic sae 5w-20. both engine types have an oil capacity of 5.1 quarts, with a filter.