If you were about to buy a new case of Amsoil for your bike would you pick Amsoil 10W40 or Amsoil 15W40. Would the 15W40 hold up better in my little VFR? Seems to me the 15w40 would have fewer polymers in it to shear.
I haven't ran any Amsoil in it yet. Only Rotella 5W40 and it has worked well for nearly 4K. Shifting is just now getting clunky.
I haven't ran any Amsoil in it yet. Only Rotella 5W40 and it has worked well for nearly 4K. Shifting is just now getting clunky.