32:1 and common sense go a long way. A constant throttle for a new motor will not hurt it, it will not help it either. Vary your speed for the first 2 gallons if you can. Change the mix ratio after a few hundred miles. 20:1 is cool. Abuse is not a warranty issue. Use your common sense. That's why you have it. I use amsoil. others will work, I have never lost a motor using it. I use Castrol GTX in my other bikes. At 200 mph oil is something you don't need on your mind.

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