I've just found out that Castrol is still making a fully PAO-based Castrol Edge 0W-40 A3/B4, like the original fully PAO-based 0W-30 A3/B4. Other Castrol 0W-40 A3/B4 oils are not fully PAO-based anymore; therefore, they cannot be legally sold as full synthetic in Germany. This one can be.
It is called Castrol Edge Supercar 0W-40 A3/B4. It is 100% PAO-based according to the MSDS as well as the Oil-Club Russia FTIR data. (These guys have access to an incredible testing lab.) Unlike the Mobil 1 FS and ESP oils, it does not contain any POE (ester), as Castrol oils typically don't contain POE.
The latest version nicely has API SN PLUS for LSPI protection, meaning low-calcium.
TBN = 9.75. It has titanium but no moly very little boron.
Castrol Edge Supercar 0W-40 A3/B4 PDS
Castrol Edge Supercar 0W-40 A3/B4 MSDS
It is called Castrol Edge Supercar 0W-40 A3/B4. It is 100% PAO-based according to the MSDS as well as the Oil-Club Russia FTIR data. (These guys have access to an incredible testing lab.) Unlike the Mobil 1 FS and ESP oils, it does not contain any POE (ester), as Castrol oils typically don't contain POE.
The latest version nicely has API SN PLUS for LSPI protection, meaning low-calcium.
TBN = 9.75. It has titanium but no moly very little boron.
Castrol Edge Supercar 0W-40 A3/B4 PDS
Castrol Edge Supercar 0W-40 A3/B4 MSDS