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:
Manual Transaxle Operation
The manual transaxle has five forward gears. Press the clutch pedal down fully
while shifting, then release it slowly.
A special safety feature prevents inadvertent shifting from 5 (Fifth) to R ( ...
Removal
1.
Turn the ignition switch OFF and disconnect the battery
negative (-) cable.
2.
Disconnect the crankshaft position sensor connector
(A).
...
Air bag non-inflation conditions
• In certain low-speed collisions the air bags may not deploy. The air bags are
designed not to deploy in such cases because they may not provide benefits beyond
the protection of the seat belts ...