I emailed them and asked if we can use the grades of Rotella T6 5w40 and 15w40 which they claim meets JASO MA/MA2, and they said yes it is safe to use in a motorcycle with a wet clutch. I trust this far more than unverified claims of clutch failure made on an internet forum. Especially as I and many others use these oils without any problems. Hopefully this will put all the BS on this site about using Rotella to rest. I had contacted with two departments and people. I have removed their signature for privacy reasons. Most importantly I have this in writing.


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