What grade oil is correct for my 2012 Polo GTI? Thanks for the help

I just had the 1st service done (11,000k in 11 1/2 months) and I've been trying to get the dealership to confirm the brand and grade of oil so that I could buy some top up oil to match.

I'm a bit OCD when it comes to the oil as VW's tend to use some between services.

The...