Hey BD,
The only real issue with the oil whether synthetic or Petro, it needs to be formulated for WET CLUTCHES. You will likely get into trouble if you don't. That is a manufactures requirment so if you have warrenty I think this is an area to pay attention to.
Amsoil and Mobile are the top dogs that I am aware of and Amsoil (according to their literature) rates out better than them all.
I just changed my oil last month after 4000 miles and it was spotless Amsoil and Triumph allow for 6,ooo/mile or one year intervals.
ed
