I've been running M1 0W-40 for some time now and my VW 1.8T has started to make some ticking sounds etc.. The manual calls for a 5W-30 and now that summer is upon us I feel a change in oil is needed. I have a 2000 1.8T New Beetle with a good amount of mod's. After reading about the GC (thanks to everyone) I went ouit for a simple hunt and found some at the second AZ. I will give audi_guy for some for his help as he's just about cleaned out GA! Next up, filter. I've always used M1 but will probably go to OEM.