Hello joe, i just purchased a 1979 cbx, 55 K miles. While asking dealers for info, i am getting multiple answers. But none of them owns a CB X.I am looking For type of oil, Is synthetic ok? What type of Gas? Do i add lead? Cbx man has a manual that went from $40 to $165 overnite. I guess he figured a couple dum questions & Whatever. Could you help me out with the Basic Maintenance info. Thank you, Dave