Whatever you use must be JASO rated (for motorcycle clutches), read the info on the oil can/container.
Liqui Moly has been in use as an additive, used mostly by BMW riders. I drained the Liqui Moly out of my 1994 BMW K75. It was absolutely gooey. The product took hold years ago on BMW R series, Airheads, as an additive to use with conventional oil. My K bike had a high pitch whine to the motor. The heavy, black moly was also in use in the transmission and rear drive.
My K bike is running Shell motorcycle oil, 10w40, full synthetic. It is running much quieter now.
On both my C5 and my Continental GT, I run Shell full synthetic motorcycle oil, 15w50. This oil is what Ducati recommends for their bikes.
The Liqui Moly came out of a time when BMW riders wanted to help add lubricative properties to conventional oil. For my bikes, I don't see the point of using it.
Every time I have switched from conventional oil, with or without moly, the engine is noticeably quieter. With my BMW, I also put in new spark plugs at the same time as the switch to full synth. The were not bad, but I switched from Bosch to NGK. Quieter motor, slightly improved mileage.
I don't see the point of using an additive to the oil I'm running in my Royal Enfields.
Bill