they arent always the answer man thats for sure and a study aint done on your exact bike done on a brand new how it should be not beat bike so just my opinion but some swear by it some dont i run it but had a bike once was to thin and made noise with non it had no noise so i was cool with the noise and ran synthetic and knew noise was okay and its better for motor but youll never know the dif your not gunna lose a noticable amount of miles on your motor life but just trying to say