Kia Optima: Fuel Requirements
Your new Kia vehicle must use only unleaded fuel having an octane rating of at least 87.
Your new Kia is designed to obtain maximum performance with UNLEADED FUEL, as well as minimize exhaust emissions and spark plug fouling.
✽ NOTICE
NEVER USE LEADED FUEL. The use of leaded fuel is detrimental to the catalytic converter and will damage the engine control system’s oxygen sensor and affect emission control.
Never add any fuel system cleaning agents to the fuel tank other than what Kia has specified or the equivalent. (Consult an authorized Kia dealer for details.)
Driving Tips
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Gasoline Containing Alcohol and Methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol), and
gasoline or gasohol containing methanol (also known as wood alcohol) are being marketed
along with or instead of leade ...
See also:
Rail Pressure Sensor (RPS). Schematic Diagrams
Circuit Diagram
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If You Have a Flat Tire
The spare tire, tool bag, jack and jack handle are stored in the trunk compartment.
Move the carpeting out of the way to reach this equipment.
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Air cleaner
Filter replacement
It must be replaced when necessary, and
should not be washed.
You can clean the filter when inspecting
the air cleaner element.
Clean the filter by using compressed air. ...