(I had a Yamaha 4stroke and used their "ring-free", and I can tell you it makes a hell of a difference!!, I would not have belived it but that stuff is magic)[/QUOTE]
I was waiting for someone to mention the "ring-free". The stuff is amazing. I ran one season on my Yami 4-stroke without it and had fouled plugs twice. I always run 89 Octane. Last year I ran the ring free with every gas fill-up and the motor ran amazingly better. I do not know what the stuff does but it's great and I would never run without it.
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