The 5w30 Castrol Edge is for the VW TDI clean diesels.
According to the charts in my 1025 owner's manual (and same in the 4010 manual), a xw30 oil is fine unless you live in very hot parts of the country, like Arizona, New Mexico and southern parts of Texas. It's certainly fine in a VW TDI.
Thanks Ralph - I don't know the new tDI's, and am somewhat confused about how Castrol is marketing this oil. Does this Edge have a C_ spec, or just VW and Euro specs for diesel use ?
I guess I didn't understand your first post - are you planning on using this Edge in your Yanmar ?
Rgds, D.