Kia Optima: Recommended LubricantsTo help achieve proper engine and powertrain performance and durability, use only lubricants of the proper quality. The correct lubricants also help promote engine efficiency that results in improved fuel economy.
Engine oils labeled Energy Conserving Oil are now available. Along with other additional benefits, they contribute to fuel economy by reducing the amount of fuel necessary to overcome engine friction. Often, these improvements are difficult to measure in everyday driving, but in a year’s time, they can offer significant cost and energy savings.
These lubricants and fluids are recommended for use in your vehicle.

*1) Refer to the recommended SAE viscosity numbers on this page.
Recommended SAE Viscosity NumberInstallation
1.
Remove the ignition key from
the vehicle.
2.
Disconnect the battery negative
cable and wait for at least three minutes.
3.
Tighten the curtain airb ...
Specifications
Specifications
Item
Specification
Type
Motor Driven Power Steering
Steering gear
Type
Rack & Pinion
...
Components and Components Location
Component Location
1. Windshield deicer relay (Built-in engine room relay box)
2. Windshield deicer switch
3. Windshield deicer
4. Deicer connector
...