Originally Posted By: Quattro Pete
Originally Posted By: buster
Yep that is true. The VW 507/C30 spec is very demanding though based on the LZ chart and this oil can be used in gas engines.
Some car manufacturers, mainly BMW and Mercedes, specifically advise against the use of these low-SAPs oils in gasoline engines outside of Europe, citing incompatibility with lower quality gasoline outside of Europe, but I have yet to find any hard data on this. However, if it is true, then an oil such as the Amsoil Euro you linked to with low TBN may have a tough time making it to 15K miles, which is the typical OCI recommended by these car manufacturers.
Yep, and I don't think they'd just make an arbitrary choice on it. VW/Audi could save a lot of money if they just had a single oil for all their cars, yet they don't...