2012 M6 convertible recommended oil type
I need some advice on the correct oil to be using in my 2012 M6 convertible. I am getting answers that are all over the place.
1. The salesman (a trustworthy guy) from a knowledgable dealership where I bought the car is telling me his mechanics recommend Castrol TWS SAE 10W60 for all M Series Cars. My own research tells me this is for pre 2012 M6's (v10) and may not exactly be applicable to my car.
2. The parts dept. at my local BMW dealership is telling me their records say use 10W30.
3. The user manual from my 2012 M6 says to use 0W30 or 0W40 and in a pinch if those are not available use 5W30 or 5W40.
I am very confused by this conflicting information. Does anyone know who is correct? My gut tells me to go with the user manual but both dealerships are telling me otherwise and neither have 0W30 oil in stock.