Valvoline makes 3 versions of their racing oil. The conventional and synthetic versions ha API SL and SN rating, which are fine for vehicles with catalytic converters. They also make an oil which states it's "NOT street legal", because it may contaminate your catalytic converter. That is a true track oil. You can do a google search to see the MSDS sheets for those oils. The first two oils are the ones that are hard to beat in street bikes.,,,