B.P. Ultimate, Mobil 8000 and the new Caltex 98 octane Vortex are the same product and are loaded from the same facility. At least here in Victoria anyway. Shell Optimax is a similar product, coming from Shell's Geelong facility. Both of these 98 Octane fuels are very much the same in every way, which makes me ask the question, why do you think one is crap and the other not???