Hello, I posted and it was suggested that I repost here.
I used Agip 4T full synthetic on a Husky enduro bike, as per manufacturers recommendation, 10W60.
From my UOA after 1000 miles, it sheared down to a viscosity of 13 cSt at 100C.
Also used their 5W40 on a Suzuki Hayabusa, after 1,200...