I used this oil in my 2005 Jetta TDI (BEW) maybe 5 years ago. At that time it was in a black bottle with green label. I was just thinking about using it again and see that it's now in a red bottle. I'm sure it's just a marketing change, but does anyone know whether this oil had had a change in the formulation in the past 5 years? Is it still a good oil for the BEW engine? Unless I can get the local dealer to get it for me cheaper, it looks like I'll be paying about $8.22/qt online, before tax.