Beanoil and others: I've been an advocate for early changes on the Can Am's for some time. In the past, I've done lots of lab tests and made the assumption that if it shears down to 30 or even upper 20's at 4000 miles it will continue to shear. This appears to not be the case.
Recently on the Spyderlovers.com forum several folks have run the oil much longer, and lab tested it at 6-8000 mi, on the 1330 motors. Surprisingly, these tests appear to bear out BRP's contention that oil in the 1330, while shearing early on, will taper off and can, therefore, be run 9300 miles that they specify in the manual. I don't have the specifics of these tests at my finger tips, but am slowly, very slowly, beginning
to believe this may be the case. If a few others report good long term lab tests, then I may be convinced to run mine a bit longer.
Perhaps to 5000 miles.