Hi gents, Just picked up a like new Passat TDi yesterday with 40k on it. Manual calls for strict use of Synthetic 507 spec oil only. I'm finding these difficult to find... any other newer TDi owners on here care to share what you're using and where you are getting it? Prefer off the shelf oils, no AMSOIL pyramid scheme stuff... I went ahead and did change the oil yesterday just because of my OCD with not knowing what was in it (dealer window sticker said Castrol 0W20, which scared me!) I dumped Rotella 5W40 T6 in it, which IMO is perfect for almost any diesel 99% of the time, but it didn't have the 507 spec ref.