I don't think an oil that doesn't meet the JASO specs would even be listed in the JASO registration list of motor oils. It has to meet the JASO specs, or it can not make the registration list.
It's a problem because JASO does not test oils. They only register oils... they don't know for sure if an oil is wet clutch compatible or not with the millions of users around the world until its been in service for thousands of miles... No one squawks online that their clutch feels defeated riding off the Dealers showroom floor on a newly manufactured bike...
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