All the replies to "Noob here, just bought an XII" start with "change all the fluids". Over the first few months, I did. Every single one was way over-due.
Stand-outs: I needed three radiator flushes with the real flush stuff to get a clean return. That pus-like gelatinous goo in my shocks ... I'll just say it was hard to clean out. After SeaFoam in the crankcase, my 2-week old motor oil was seriously skanky -- and still was for the next two 2-week oil changes (this after pulling and cleaning the pan).
But my clutch oil was just the garden-variety black water substance.
Change ALL the fluids.