I am at about 54000 miles on my 2013 VW Passat TDI. I had the emissions modified by VW and kept the car. I have used dealer supplied and installed Castrol Professional LL03 5W-30 oil at about 9-10,000 mile intervals since new. No issues! Car runs great and has been VERY dependable. Stay the course!
2013 VW Passat TDI SE, 56,350 miles Castrol Professional VW507 5W-30
2017 VW Golf All Track 14,5000 miles Castrol Professional VW505 10W-40