IMO, there's nothing special about 507.00, just a very particular specification, like many others these days.I thought the purpose of forums like this is for people to pose questions that they have, and then have other forum members provide them with any answers or information that they have. You know, sharing knowledge. The original poster asked why our engines need the "magical" 507.00 engine oil that we cannot get at our local auto parts or big box stores. Although some of us have attempted to discuss what is the "magic" about 507.00, most of the posts have dealt with side issues like 507.00 oil is not that expensive, don't put anything but 507.00 in your engine, or how you can get 507.00 at your VW dealer or online ordering.
So what we need to do is just send all of our questions to VW HQ in Germany? Sorry, my bad.
What's "special" is the lack of distribution of the oil in the US, in comparison to other parts of the world - but probably in proportion to the % sales of VW Group diesels in the US, much lower than in Europe.