Can I run a YS63 on Byron 15% nitro, 16% castor and synthetic without any porblems? I HATE the thought of having to spend the money for 20/20 which I would have to order by the case, and have no place to keep it. Any other 15% fuel usually sold by LHS work? Appreciate your help.
Krusty -> YS fuel (1/7/2003 2:49:54 AM)
YS recommends an all synthetic oil fuel for their four-strokes. I had sent an email to S&W fuels about their YS 20/20 fuel mixture and they informed me that it does not contain any castor as per YS. The reason is that castor in a four-stroke causes "coking" (burnt oil deposits) with the valves. Therefore, a high (20%) all synthetic oil is best.