What do you recommend for the primary case and transmission?

What product do you recommend for 2-cycle gearboxes?
August 17, 2018
What oil do you recommend for Harley Davidson®motorcycles?
August 17, 2018

What do you recommend for the primary case and transmission?

Royal Purple Max-Cycle® 10W-40 or 20W-50 motor oil may be used in the primary tank. For transmissions, Royal Purple recommends Max-Cycle 20W-50 or Max Gear 75W-90. NOTE: DO NOT use Max Gear lubricants in the primary or in any other component containing a wet clutch.