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.
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2015 Kia Optima EX
Quick Lookups: Fluids
2015 Kia Optima EXSECTION Fluids
| FLUID CAPACITIES | |||||||
|---|---|---|---|---|---|---|---|
| Fluid Type | Application | Standard | Metric | Fluid Spec | Note | S/H | |
| Air Cond Compressor Oil | Gas | 3.30 OZS. | 0.09 L | PAG #FD46XG | S | ||
| Air Cond Refrigerant | 1.21 LBS. | 0.54 KG | R-134a | S | |||
| Automatic Transmission Fluid | 2.4L Eng,Gas | 7.50 QTS. | 7.09 L | MICHANG ATF SP-IV, SK ATF SP-IV, NOCA ATF SP-IV, KIA genuine ATF SP-IV or other brands meeting the GL-4 specification approved by Kia Motors Corp | S | ||
| Brake Fluid | 0.70 QTS. | 0.66 L | FMVSS116 DOT 3 or DOT 4 Brake Fluid | S | |||
| Engine Coolant | 2.4L Eng,Gas | 7.18 QTS. | 6.79 L | 50/50 mixture of Ethylene Glycol Antifreeze and water | The engine coolant should be compatible with aluminum engine parts. | S | |
| Engine Oil | 2.4L Eng | Drain and refill,w/Filter | 5.07 QTS. | 4.79 L | API Service SM, ILSAC GF-4 or above, SAE 5W-20 or SAE 5W-30 | 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). | S |
| Fuel Tank | Gas | 18.49 GALS. | 69.99 L | S | |||
| Windshield Washer Fluid | N/A | N/A | S | ||||
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.