Appreciate it!!G12/G12+/G13 from VW. Or Pentosin Pentofrost SF (G12 equivalent) or E (G13 equivalent). You should be able to get the Pentosin from an auto parts store.
G12 would have been what it came with from the factory (pink) but VW has since come out with updated coolants and now we're at G13 (purple) and they should be fine to mix together.