Hello Alex,
As Cliff says.
So are you saying you haven’t got, or can’t get, a hard copy of the owner’s handbook? That would surprise me.
It used to be 5w 30, but you would need to check that, either by obtaining a copy of the handbook, or buying a litre of the correct oil at your local dealer.
As well as needing to know the grade, you will also need to know the VAG specification within that grade - used to be …..504?. from memory, so don’t quote me on that.
Do you need this oil to top up, or do you want it to do an oil change?
If the latter, then I always use the VAG brand by Quantum - available from a number of EBay suppliers.
Perhaps you could come back to us.
Kind regards,
Gareth.