Kia Optima: Inspection| 1. | Check the engine oil quality. Check the oil deterioration, entry of water, discoloring of thinning. If the quality is visibly poor, replace the oil. |
| 2. | Check the engine oil level. After engine warm up stop the engine wait 5 minutes then check the oil level. Oil level should be between the "L" and "F" marks on the dipstick. If low check for leakage and add oil up to the "F" mark.
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Recommendation : 5W-30 ACEA A5 (If not available, refer to the recommended API or ILSAC classification)
API classification: SL or SM aboveILSAC classification : GF3, GF4 or above
ACEA Classification : A3 or A5SAE viscosity grade : Refer to the recommended SAE viscosity number

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Oil And Filter Replacement
Balance Shaft & Oil Pump. Components and Components LocationRecirculated Air position
When the air intake control switch is depressed (switch indicator illuminates),
almost all outside air flow into the vehicle is shut off and air inside the vehicle
is recirculated.
This position ...
Overdrive Clutch Control Solenoid Valve(OD/C_VFS). Schematic Diagrams
Circuit Diagram
...
Inspection
[Motor]
1.
Turn ignition switch OFF.
2.
Disconnect the EWGA connector.
3.
Check that the EWGA is stuck by foreign material.
...