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 NumberDescription and Operation
Description
The 6-spd automatic transaxle consists of an overdrive clutch (OD/C), a one-way
clutch (OWC), a lower and reverse brake (LR/B), an underdrive brake (UD/B), a 26
brake (26/B), and a 35 ...
Specifications
Items
Specification
Hood
Type
Rear hinged, gas lifter type
Front Door
Construction
Front hinged, fra ...
Engine Mounting. Components and Components Location
1. Transaxle mounting bracket
2. Roll rod bracket
3. Sub frame
4. Engine mounting bracket
5. Engine mounting support bracket
...