Kia Optima DL3 Quiz
Specifications and Consumer Information

Recommended Lubricants and Capacities

In this manual: Specifications and Consumer Information
Your Vehicle at a Glance — 5Safety Features of Your Vehicle — 46Vehicle Specifications — 139Driving Your Vehicle — 69What to Do in an Emergency — 18Maintenance — 64Specifications and Consumer Information — 13
~1min read

To achieve proper engine and transmission performance and durability, use only lubricants of the proper quality. Proper lubricants also contribute to engine efficiency, which results in improved fuel economy. These lubricants and fluids are recommended for use in your vehicle.

Recommended SAE Viscosity Index

The viscosity (thickness) of engine oil affects fuel economy and cold-weather operation (engine starting and engine oil flow). Engine oils with lower viscosity may provide better fuel economy and cold-weather performance; however, higher viscosity engine oils are necessary for adequate lubrication in hot weather. Using oil of any viscosity other than the recommended may cause engine damage. When selecting oil, consider the temperature range in which the vehicle will operate until the next oil change. Refer to the chart to select the recommended oil viscosity.

Engine oil bearing the API certification mark conforms to the International Lubricant Specification Advisory Committee (ILSAC) standard. Use only engine oils that display this API certification mark.

Test yourself

A quick Kia Optima DL3 quiz: every answer comes with an explanation and a link to the manual page.