I keep commenting about this but----I am sure all of you know that Corvette, porche, farrai and all the major manufactures of extremaly high preformance vechilies use syn from the start. In fact they will void the warrenty if you use anything else. Are you saying these motors are built with better machining than the busa so a syn will not let the busa break in? I use Golden Spectro from day one in over 32 new bikes that I have owned. Not one have given me problems and have been the strongest of the breed.