It looks like they don't recommend it for wet clutches. I'm suspicious about this because I've seen anecdotal evidence that it's ok but I'm not going to argue with the tech department. I can get Rotella T6 in 2.5 gallons from Amazon but they charge $85 deliver
However I have found that it is available on Australian feeBay for $58 delivered so it's pretty well the same price as the expensive motorcycle oils once you take it up to 4L from one US gallon.
So I guess it's not really worth the bother especially as it's 5W40 which maybe won't be so good in a stinking hot climate, even if it does have a tiny bit extra zddp. say 1250 instead of 1000.