There are still dealers that use anything available in the EA888 Budak cycle. 5W40, 0W30, whatever they have at their disposal.I keep a bottle of Castro 5w40 VW502 in the back of my GTI for topoffs, only because I think that the dealer is using that for changes. When I have changed it myself I have used Mobil 1 0w40, mostly because I rarely can find the 5qt Castrol 5w40 jug and buying by quart is stupidly priced in comparison. With more local driving I change the oil at 5k miles, where the VW specified interval is 10k. I still use the dealer for ease of warranty purposes every 10k miles for oil changes. I just don't like running oil beyond 7k miles and I'll likely make that the interval outside of warranty. I just make it 5k now because I don't want to wait until 10k to only do the dealer changes.