I have read the posts on the German Castrol synthetic 0W-30 which is different from the US stuff. I also have linked, in another topic an Australian website that indicates that the Castrol 5W-30 is an ACEA A3. The Syntec 5W-30 available here is A1. Is this just Castrol or is this common to most companies. Are we being shafted, or am I putting too much into the ACEA ratings? Here is the Australian link again. Austrailian Castrol