Follow the manufacturer’s recommendations regarding viscosity. Most manufacturers recommend a 10W-40 for 4-cycle, liquid-cooled motorcycles. Air / oil cooled motorcycles typically specify a 20W-50. Check your owner’s manual for verification or contact Royal Purple’s Automotive Technical Department at 888-382-6300 for assistance.
Royal Purple® suggests adhering to manufacturer’s recommendedoil change intervals for vehicles under warranty. Vehicles that are no longer under warranty can frequently double or triple the number of miles between oil changes depending on the vehicle, its condition, the way it’s used (excessive idling), and the oil filter that is used. For guidelines specific to your vehicle, we recommend contacting our technical department at email@example.com.
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.