Changing the engine oil and filter
Have engine oil and filter changed by an authorized Kia dealer according to the Maintenance Schedule at the beginning of this chapter.
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If exceeding the maintenance schedule for replacement of engine oil, the engine oil performance may deteriorate and the engine condition may be affected. Therefore, the replacement cycle should be observed.
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To keep the engine in optimal condition, use recommended engine oil. If not using the recommended oil, replace it according to the severe usage maintenance conditions.
Used engine oil may cause irritation or cancer of the skin if left in contact with the skin for prolonged periods of time. Used engine oil contains chemicals that have caused cancer in laboratory animals. Always protect your skin by washing your hands thoroughly with soap and warm water as soon as possible after handling used oil. Do not leave used engine oil within the reach of children.
If the oil pressure lowers due to insufficient engine oil, etc., the engine oil pressure warning light 
turns on and an enhanced engine protection system that limits the engine's power is activated. After that, engine warning
light 
turns on if driving repeatedly and continuously. (For Smartstream T-GDi engine)