What type of transmission fluid does a 2005 Kia Optima use?

The 2005 Kia Optima typically uses Hyundai/Kia ATF SP-II or SP-III automatic Transmission Fluid. It's important to check the owner’s manual or consult with a dealership to ensure you're using the correct fluid type for your specific model, as using the wrong fluid can affect transmission performance. Always make sure to use fluids that meet the manufacturer's specifications.