Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Kia OptimaOil Type & Capacity
OEM spec from the factory service manual for the EX variant.
Quick Answer
Oil Type
API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30
Capacity (w/ Filter)
5.07 QTS.
4.79 L
Variant
EX
Note: KIA recommends TOTAL QUARTZ oil.
If the API service SM engine oil is not available, you may use API service SL.
For better fuel economy, it is recommended to use the engine oil viscosity grade SAE 5W-20 (API SM/ILSAC GF-4).
Source: Factory service manual — 2016 Kia Optima EX. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2016 Kia Optima take?
- The 2016 Kia Optima requires API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the EX configuration.
- How much oil does a 2016 Kia Optima need?
- The 2016 Kia Optima takes 5.07 QTS. (4.79 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2016 Kia Optima?
- Yes — synthetic oil that meets the API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2016 Kia Optima?
- Using oil that does not meet the API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.