Castrol manufactures special oils like SLX LongLife II 0W-30 for some Audi/VW (VW 503 00/506 00, 506 01) and SLX LL01 FE 0W-30 for some BMW (N40, N42, N62 and N73 engines). No doubts a.m oils meet or, may be, even exceed, to certain extend, ACEA A1/B1, A5/B5 requirements. I'd aslo add SLX R-Tec...