come on chris... you should know to look in the owners manual by now!!!
go to GSF and buy their semi-synthetic stuff.. very cheap and is great oil. (used it in my car for ages)
have fun changing the oil filter though, and dont over tighten it when you put the new one on
I have to say I use comma 5w-40 fully synth in the missus 1.4 I don't like to skimp on quality and as for the cupra it needs top oil for long life due to the higher temp's involved.