I am as well. There is a huge knocking at the top of my engine. My warranty was voided out because I went 7k miles in between an oil change. They said it was too long (2k) mile difference. So my engine is not covered. I have been doing the additives oil change but I feel I may have one year with my 2017 model. Such a shameHi im wondering what the outcome was for you as I’m also dealing with the exact same problem on my 2017 QX60 and have all my receipts!