I may have seen the Castrol Formula R when I was in an AutoZone looking for the German Castrol. I din'y pay much attention when I noticed Castrol R on the box because I was looking for the other oil. Some are saying that Castrol Formula R has already replaced the German made Castrol 'Down Under.' Perhaps they were just getting rid of the German Castrol here until the Formula R was available. It is possible the Castrol Formula R is a much better motor oil.