I don't think there is a difference between Profess and UNprofess Magnatec, besides the special green dye color. In fact, Castrol GTX SynBlend in the U.S., the outgoing brand label, also claimed about the same Sequence IVA wear numbers, so it makes you wonder if Castrol is just juggling brand labels and selling the same product (SynBlend = Magnatec).