https://rennlist.com/forums/997-forum/1120276-997-2-3-8-engine-failure.html
I think there is a video to go with this somewhere but I am not skimming through such a lengthy thread again.
I do in my air cooled Porsche. I'm a little hesitant for the newer type engines. Just read a lengthy thread about someone junking their engine due to LSPI.
So I just bought this car and it came with some UOAs. Mobil 1 0w40 was used. I am thinking of switching to Mobil 1 0W40 Euro, the SP rated one. Or just LM Leichtlauf 0w40, also SP rated. Probably go for the Mobil as it's available local. My other cars all run Rotella T6 5W40, I somehow doubt...