VW uses various brands of oil as factory fills, but most often it is a 0w30 synthetic that's similar to the German Castrol stuff and is VW 505.00 rated. It has a viscosity of approx 10 Cst @ 100C and a TBN of about 11.0.
Most of the guys who knew anything left the TDI Forums long ago ....
Tooslick
Most of the guys who knew anything left the TDI Forums long ago ....
Tooslick