A guy on the Volkswagen TDI forum was doing group buys on this stuff because Bardahl says that this oil meets the VW 505.01 standard. They claim to sell the exact same oil that is packaged in different bottles - one for the heavy truck industry which carries all of the trucking industry standards and then on for the light duty industry that carries the VW and other standards.
It sounded fishy to me and the guy has yet to offer any proof that the oil meets the VW 505.01 standard.