My owners manual won't stare if 508 is compatible as it come out after the car was made . This is why I am asking .Why would you assume that?
And why would you use an oil with an approval different than what’s specified by the automaker? VAG has specifically stated that 508 00 approval is not back-specified to those models not listed for the approval. Does your owner’s manual state that either is acceptable?
I didn't know 508 wasn't backwards compatible???