Hmmm.... I REFUSE to believe that a lite oil like 10W/30 has the shear strength to provide the protection necessary. I'll continue to pay that little extra for Maxima MTL 80
I'd be VERY surprised to find out that Kawasaki was racing those in the desert with 10W/30 or 40, for that matter, in them. Thoguh I caould very well be wrong - surprise surprise surprise not on a factory ride