asia.vtec.net/topics/oil1.html
also, JASO the world renowned oil testing and approving authority is headed by the same guy who heads yamaha. Yoshonobu yashiro!
The oil companies mentioned by pinakiji are western brands emphasising more on four wheelers rather than two wheelers.. Japanese are the leaders in motorcycles and motorcycle oils whether anyone believes or not.


sometimes it can be very embarrassing too 
.

Was the engine running low on oil ?


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