I have am 06 RSV and a friend of mine just bought a new 07 RSV from a dealer in Stillwater Ok. I bought my bike from a dealer in Broken Arrow, Ok. and they told me Synthetic oil was just fine to use after the first 4000 miles. The dealer in Stillwater told my friend they don't recommend Synthetic oil at all in RSV. I have always used Amsoil motorcycle 10W40 in my bikes and have never had anything but good results. Does anyone no of a reason why we should not use Synthetic oil in our RSV?
Thanks for your help,
Dandy1