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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.
2015 Kia OptimaOil Type & Capacity
OEM spec from the factory service manual for the SX Turbo variant.
Quick Answer
Oil Type
$ACEA A5 or above, SAE 5W-30, 5W-40
Capacity (w/ Filter)
5.07 QTS.
4.79 L
Variant
SX Turbo
Note: KIA recommends TOTAL QUARTZ oil.
If the API service SM engine oil is not available, you may use API service SL.
This vehicle's factory manual
2015 Kia Optima: confirm the engine, trim, or drivetrain to open the available repair and diagnosis sections.
Sister site: See this spec on WhatTypeOfOil.com — our quick oil type & capacity lookup for every vehicle.
Other specs:All specs
What You'll Need
Related for Your 2015 Kia Optima
Frequently Asked Questions
- What type of oil does a 2015 Kia Optima take?
- The 2015 Kia Optima requires ACEA A5 or above, SAE 5W-30, 5W-40. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the SX Turbo configuration.
- How much oil does a 2015 Kia Optima need?
- The 2015 Kia Optima takes 5.07 QTS. (4.79 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2015 Kia Optima?
- Yes — synthetic oil that meets the ACEA A5 or above, SAE 5W-30, 5W-40 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2015 Kia Optima?
- Using oil that does not meet the ACEA A5 or above, SAE 5W-30, 5W-40 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.