Discussions about what oil is best transcend vehicle type, brand, and age, and are normally a complete waste of time.
I just bought a new Yamaha MT-07, and the manual says to use Yamalube 10w-40 in my climate. Not synthetic in particular. They sell both conventional and synthetic, but it just says 10w-40. I got a warm fuzzy feeling about Yamaha when I read that they aren't into mystical properties of oil.
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