Ok , there will be no definitive answer to this question just opinions. My bike is used strickly for drag racing no street use. Mabey 75 miles in a season. So how offten should the oil be changed? I"m thinking at the end of the race season, or when ever a clutch goes up in smoke. So only making one change a year, I should pay the extra bucks and use royal purple. what do yall think?
I would use 10/40 non synthetic and change it every couple of passes and def when you smoke a clutch