All the oils I am currently using are 2-3 certification generations old. I find it interesting that these 3 have not "evolved". I realize that these were all formulated to meet old standards. I particularly find the BMW 5w30 being SL rated interesting since it is marketed as changing to meet the needs of current BMW's, yet it is old school. According to the manual of my 11' 328i, BMW LL01 is all that matters, but if that is not available than select an SM rated oil. M1 0w40 is the only BMW LL01 and SN oil available(that I know of), and not even BMW uses it. I guess that the catalytic converters aren't really that bothered by the older oils?