Re: Where do i put the oil in the X-12?
although 5w-30 is recommended, I use Mobile 1 for motorcycles, 10w-40 and haven't had any shifting problems at all.
Useing automotive oil is not as good because motorcycle oil has more polymers, fillaments like spaghetti strings that get chopped up by the gears in the transmission of a motorcycle, since the same oil is used for both engine and transmissions, except on Harley's v-twins. That kid of oil lasts longer and works better. Your bike will thank you!