According to maxima which also makes a synthetic k2 two stroke oil.

"Just from a performance standpoint, if I were you I would most definitely use the Castor 927. Castor oil is the only lubricant that builds film strength under load as the oil molecule polymerizes and actually gets stronger creating more ring seal. I understand that there is another step involved when using 100% race fuel however, the performance and smell would be well worth it to me."