OK, lol, U may wanna change info in yer Avatar and add some info on yer vehicle, helps ppl to know to help U out. U running a 2021, U run top tier, U not need additive,. U can put in if U want, but really, not need. Put in once in a while if it gives U that happy feeling. Run some high grade Shell, or Sunoco in there, U be fine. Lots run seafoam once in a while to clean things out. I personally do not like that, but lots of PPL to include PPL a lot more knowledgeable than me do. U saw the comment from ShermanBird, he has been a mechanic for years and has his own place, so do as what makes U happy.