2015 Kia Optima Oil Type & Capacity
The 2015 Kia Optima oil type depends on the engine: the EX takes 5W-20 (5.07 quarts with filter); the Hybrid takes 5W-20 (5.07 quarts with filter); the Hybrid EX takes 5W-20 (5.07 quarts with filter); the Hybrid LX takes 5W-20 (5.07 quarts with filter); the Limited takes 5W-30 (5.07 quarts with filter); the LX takes 5W-20 (5.07 quarts with filter); the SX takes 5W-20 (5.07 quarts with filter); the SX Turbo takes 5W-30 (5.07 quarts with filter); the SXL Turbo takes 5W-30 (5.07 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- EX: 5W-20, 5.07 quarts with filter
- Hybrid: 5W-20, 5.07 quarts with filter
- Hybrid EX: 5W-20, 5.07 quarts with filter
- Hybrid LX: 5W-20, 5.07 quarts with filter
- Limited: 5W-30, 5.07 quarts with filter
- LX: 5W-20, 5.07 quarts with filter
- SX: 5W-20, 5.07 quarts with filter
- SX Turbo: 5W-30, 5.07 quarts with filter
- SXL Turbo: 5W-30, 5.07 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| EX — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| Hybrid — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| Hybrid EX — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| Hybrid LX — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| Limited — 2.0L Eng | ACEA A5 or above, SAE 5W-30, 5W-40 | 5.07 QTS. | — | KIA recommends TOTAL QUARTZ oil. If the API service SM engine oil is not available, you may use API service SL. |
| LX — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| SX — 2.4L Eng | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 5.07 QTS. | — | 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). |
| SX Turbo — 2.0L Eng | ACEA A5 or above, SAE 5W-30, 5W-40 | 5.07 QTS. | — | KIA recommends TOTAL QUARTZ oil. If the API service SM engine oil is not available, you may use API service SL. |
| SXL Turbo — 2.0L Eng | ACEA A5 or above, SAE 5W-30, 5W-40 | 5.07 QTS. | — | KIA recommends TOTAL QUARTZ oil. If the API service SM engine oil is not available, you may use API service SL. |
Buy the right oil
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More specs & repair guides for your Optima
2015 Kia Optima factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
7.18 quarts (6.79 L) — 50/50 mixture of Ethylene Glycol Antifreeze and water. The engine coolant should be compatible with aluminum engine parts.
Frequently asked questions
What type of oil does a 2015 Kia Optima take?
It depends on the engine: EX uses 5W-20; Hybrid uses 5W-20; Hybrid EX uses 5W-20; Hybrid LX uses 5W-20; Limited uses 5W-30; LX uses 5W-20; SX uses 5W-20; SX Turbo uses 5W-30; SXL Turbo uses 5W-30.
How much oil does a 2015 Kia Optima take?
Capacity depends on the engine: EX holds 5.07 quarts with filter; Hybrid holds 5.07 quarts with filter; Hybrid EX holds 5.07 quarts with filter; Hybrid LX holds 5.07 quarts with filter; Limited holds 5.07 quarts with filter; LX holds 5.07 quarts with filter; SX holds 5.07 quarts with filter; SX Turbo holds 5.07 quarts with filter; SXL Turbo holds 5.07 quarts with filter.
Can I use synthetic oil in my 2015 Kia Optima?
Yes. 5W-20 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 2015 Kia Optima. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.