BC 5w40 is also supplied by VWoA through the dealership network. Castrol has been supplying it to VW for at least 6yrs.. Its interesting to see that it now is available elsewhere.
Something else to keep in mind....BC is part of VWoAs solution for the 1.8T sludge fiasco. Since VWoA has dropped the price of this oil (current msrp $5.00 per qt) many dealerships use it exclusively for VW/Audi vehicles requiring synthetic oil.
My local Audi dealership has informed me that BC is used in free schedualed maintanences for all `05 and newer Audi vehicles, regardless of engine type(except the `03/`04 RS6, it gets Castrol TXT 505.01).
[ February 19, 2005, 10:38 PM: Message edited by: Brikhead ]