Vehicle Questions and Answers
Welcome to the Vehicle Q&A Hub. Find answers to your automotive questions, share your experiences, and get expert advice on vehicle maintenance, troubleshooting, and more!
5174 views
4 answers
The 2015 Kia Optima requires either 5W-20 or 5W-30 oil. It is important to change the oil as needed, typically every 5,000 to 10,000 miles. Neglecting to do so can lead to engine problems. Using high-quality oil is crucial for optimal engine performance, as issues with the oil can arise over time. One common indicator of problems is a foul burning odor, which should be addressed promptly to prevent potential engine damage. Poor-quality oil can result in engine failure, decreased fuel efficiency, and the occurrence of an unusual knocking sound coming from the engine.
Synthetic or traditional oil
For all 2015 Kia Optima models, it is suggested to use a 5W-20 or 5W-30 engine oil, except for the turbocharged versions. Turbo models should use a 5W-30 or 5W-40 oil that meets ACEA A5/B5 quality standards.
here is the revised text: Man-made materials created through chemical processes.