my wife has purchased some Zmax for me as gift for my bike but i'm not sure on useing it. The manual said not to add anything to the oil because it is also use to lube the tranny. use or not use?
I agree! To sum it all up any additive that has any type of friction modifiers will ruin your clutch, and saying that watch out for some oils to. Some oils do have friction modifiers in them, some are less than others but if they have them dont use them any friction modidiers will mess up your clutch. Make shure whatever synthetic you use is wet clutch compatible.