I have tested both in my bike and found that synthetic motorcycle oil makes it easier to shift than the regular Petroleum oil. When I ran the Petroleum oil, my crank case seems to bind and makes it really hard to shift, not with the synthetic, it shift´s very smoothly. Does it make a difference where the engine is made?
Join in and write your own page! It's easy to do. How? Simply click here to return to Motorcycle Oil.