I have a 2015 Hyundai Sonata, and the original Theta II engine was one of the "bad" ones. I've never heard an engine knock so badly, it went at about 122,000 miles. I had no issue at all with my local Hyundai dealer replacing the engine on warranty in September of 2022. Almost 4 years later and 50,000 miles, the new engine hasn't used the first drop of oil. Regular high quality synthetic oil changes every 3-4,000 miles. So far so good. Anyone else gone through this? And if so what's your experience been?