Vx Dexos 1 Gen 2 oil

[Elroy Blue]

About to do a service on our 2017 1.0T Astra K and everything I've read says you absolutely must use a Dexos 1 Gen 2 oil.
Vx dealer haven't got any in stock.
Online throws up Castrol 5w30 and other major brands as comparable, but nothing on their labels mentions dexos 1 gen 2.
Are they the same?

[N7GTX]

Opie Oils on here show these as compatible.

https://www.opieoils.co.uk/c-4512-dexos1-gen-2.asp...