Hey, I have about 11k on my 03 gsxr 1000 and have been using suzuki dino oil in it.
I was wondering if it would be ok to change to a sythetic oil after having used dino for so many miles. Or would this cause some problems. Im thinking amsoil or shell rotella.

it won't cause any problems... that is a wives tale. If your motor starts leaking oil after you switch to synth, it is not the synth causing it... there was something already there before the switch.

so you are good to go, throw some synth in there, don't forget the new filter :thumbup

yeah what he said, you'll be fine dude