IF your bike has a wet clutch and the same oil reservoir serves the engine and clutch, do what QKEN says. If not, you can use the automotive types that contain the dreaded "friction modifiers" that raise cain with clutches (read this as slipping, sometimes not totally detectable but damaging). My take is use what your manual recommends, unless you have a VN2000 that takes 6 quarts on a change, it won't break the bank to use Kawachem at $11-$12 a gallon. And if you can afford the VN2000, you can afford the oil!