I recently bought a 90cc Kazuma ATV for my son. It has an air cooled Chinese built clone of a name brand engine. Really just a cheap 4 wheeler at $500 with the shipping. Naturally we are not talking about the reliability of a Honda here, so I need to know the best oil possible for this type of engine as well as the break in procedure you would use. Also any other tips you might have. I know Valvoline makes an ATV oil, but whats the best?