I bought this for my R1 and it has taken out the infamous R1 clatter, very smooth running
I noticed when I started using this oil my bike actually ran better. The gears shifted smoothly and it ran cooler. I will definitely use this oil for the remaining life of this Fz10!
Yamalube is simply amazing. Ive been using it for years and its never let me down. several Oil analysis tests have been done with wonderful results even after harsh conditions.
I have been using Yamalube products for a long time and I really like their engine oils and love the full synthetic. I use this exclusively in my R1.
The Yamalube Racing Full Synthetic Oil With Ester is currently available in 15W-30, which is heavier than necessary for your transmission.