Kia Optima: Specifications & Consumer information / Recommended lubricants and capacities

Kia Optima DL3 2019-2021 Owner's Manual / Specifications & Consumer information / Recommended lubricants and capacities

To 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. These lubricants and fluids are recommended for use in your vehicle.

Recommended SAE viscosity number

Engine oil viscosity (thickness) has an effect on fuel economy and cold weather operating (engine start and engine oil flowability). Lower viscosity engine oils can provide better fuel economy and cold weather performance; however, higher viscosity engine oils are required for satisfactory lubrication in hot weather. Using oils of any viscosity other than those recommended could result in engine damage. When choosing an oil, consider the range of temperature your vehicle will be operated in before the next oil change. Proceed to select the recommended oil viscosity from the chart.

An engine oil displaying this API Certification Mark conforms to the international Lubricant Specification Advisory Committee (ILSAC). It is recommended to only use engine oils that uphold this API Certification Mark.

Air conditioning system
We recommend that you contact an authorized Kia dealer for more details. ...

Vehicle identification number (VIN)
■ Frame number The vehicle identification number (VIN) is the number used in registering your vehicle and in all legal matters pertaining to its ownership, etc. The number is punched on the fr ...

Other information:

Kia Optima DL3 2019-2021 Service and Repair Manual: Wheel


Repair procedures Removal 1. Remove the wheel and tire (A). [Front] [Rear] Installation 1. Install the wheel and tire (A). [Front] [Rear] Hub Nut Tightening Sequence 1 ...

Kia Optima DL3 2019-2021 Owner's Manual: Seat belt restraint system


For maximum restraint system protection, the seat belts must always be used whenever the vehicle is moving. A properly positioned shoulder belt should be positioned midway over your shoulder across your collarbone. Never allow children to ride in the front passenger seat. See child restra ...

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