I've recently had the MkVI Cab (1.4 Twincharger) serviced and they have used Fuchs GT1 Pro C-3 5W-30 (which is VW 504/507). My concern now is that I'm about to drive interstate (for Nationals woooo!) but don't have any spare oil that I could use to top it up if and when it's needed (on a 2,000km round...