Can You Use 5w30 Instead Of 5w20. It is not recommended. Although they both have the same winter rating of 5, the thickness (viscosity) of 5w30 is a bit higher than 5w20. That means your engine's at stake for using the high viscosity oil.
Kia has revised oil guidelines for some of its vehicles. Effective immediately, all 2021 Kia models and all K900, Cadenza, and Stinger vehicles are advised to use synthetic oil in place of the synthetic blend we use. Quite simply, synthetic oil is better for your engine. ...Mar 15, 2021
What oil does Kia recommend?
Mobil 1™ 0W-40.
Does Kia require synthetic oil?
Kia has revised oil guidelines for some of its vehicles. Effective immediately, all 2021 Kia models and all K900, Cadenza, and Stinger vehicles are advised to use synthetic oil in place of the synthetic blend we use.Mar 15, 2021