I have a 2019 LX with 86,000 miles. I have been using Restore and Protect for the last 4 oil changes. It seems to be fine for the engine. I have read that some of these engines start using oil due to ring issues, and then it is a slow downhill until failure. Given the very few engine complaints on the NHTSA database for the 2019 models, it appears they have solved the issues. I have been changing the oil every 3500-4000 miles due to short tripping (family car in a small town), and I have zero oil consumption. I think the key to Kia's is frequent oil changes. This is my second Kia with 3.3l engine and I have had no problems thus far. Also, use only the Kia/Hyundai filters. They issued a Technical Service Bulletin on this.