I dropped the factory fill in my new MK8 GTI at 700 miles and all it will ever see is HPL 0w-30. It’s the new EA888 Gen 4 with a little more HP than gen 3 but I’m not sure what else is different but VW 504 is what I’m running.Nothing will get "damamged" by running a different oil. The ea888 gen 3 in the gti was specced with a 502 00 up until 2019 when they changed over to 508 00 (I know this because I had a gti rabbit edition and was confused by the 508 sticker in the engine bay). Absolutely nothing changed with the engine and it was verified to be for fuel economy, but it won't "damage" an engine that was previously specced for a 502 00.