Recommend high mileage oil
Use the specified weight oil called for you vehicle, as far as brand name, they are all pretty good. I use the Casteroil brand.
Just keep using the oil that got it to those many miles. There is no need to change.
Change it more often to help keep the engine clean.
Looking for a Used Sonata in your area?
CarGurus has 1,293 nationwide Sonata listings starting at $1,995.
Search Hyundai Sonata Questions
Hyundai Sonata Experts