2006 Kia Optima - Which fluid?

Maintenance/Repairs
1

Can I use API service SM, SL, SJ or SF engine oil on Kia optima 2006 2.0 16v engine

2

Any grade equal to or higher letter than specified in your owners manual. If the manual states SF all are fine.
Be sure to use the specified viscosity.

3

Only SM meets your car specs, and that’s only if it’s the correct grade and type:

Do you have a bunch of old oil sitting around?

4

17 years of use. Seems impressive for any car.