Are you saying they are different “ONLY BECAUSE” the products are for
- different markets/climatic/operating conditions
or are you saying the formulation is substantively different because it’s for a completely different engine requirement application?
It seems to me you are saying 10W-60 from the Castrol edge titanium range (“insert sub range here”) are all roughly the same with the differentiating factor being marketing and usage in different countries with slight variations in the formulation for market climate and operating conditions?
Because from what I have been told by Castrol the formulation is completely different from the perspective that it is for a different engine requirement and not a marketing, climatic or operating condition variation that you are alluding to.
Anyways, some updates. It seems Castrol NZ still have loads of the correct product for M engines (ie the original Castrol TWS aka Castrol Edge Professional (subsequent branding change)) but they weren’t sure if they could sell this to retail customers yet and have now been told that BMW no longer hold a contract over this product. To be continued ....