I own a 2017 Audi A4 Quattro 2.0T CYMC. The placard under the hood says to use 502 or 504 oil. I believe my car was released during VW/Audi's transition to 504 oil. Audi has since switched from recommending 502/504 oil in 17-18 models to 504 only in 2019+ models, with no engine differences. The...