I have read somewhere that in Europe, or in certain European Countries, when they claim "100% Synthetic", that is what you get, 100% Synthetic "Laboratory Produced" Oil. I have also read somewhere, that the definition of 100% Synthetic in the USA is somewhat different. It has to contain "some" synthetic oil, I believe up to 15% to be called "100% Synthetic", the rest being conventional oil. Can someone please clarify this for me? I am NOT interested in AMSOIL products as they DO NOT offer the grade I am looking for in a Euro Spec high HTHS oil that meets MB 229.5 & BMW LL-01. Thank You for taking the time in specifying in which Country "Synthetic" actually means "Synthetic".