Hello fellow TDI owner!
I'm in the same about, about to take delivery of a new F31 diesel. I've been looking at issues too and this is what I can find:
- N47 timing chain issues (fixed?)
- HPFP issues, since it uses the same Bosch CP4 pump as the TDI
Old habits die hard. I already bought a bottle of DieselKleen and a cool lab-grade refill jar. There's a couple Propel stations nearby, may try to use that instead for lubricity.