Has anyone heard of Motul synthetic oil? Not to bring the "oil" subject up for debate again but I just bought a VW TDI and one of the disclaimers for the motor oil is that it must meet VW 505-01 specifications otherwise unwarranteed damage may result.

I have been using Delvac-1 in my Duramax but this oil is not VW 505-01 certified. It would be nice to adhere to one oil manufacturer for both vehicles. Does anyone know what this certification entails and if Delvac-1 will ever make this certification?