Valvoline 10/40 motorcycle oil for wet clutches is what I use... Just bought the bike 3 months ago... has 30K on it, looks like a PO maybe rebuild some engine components, maybe not, there is paint on the case but not covers...typical of a rebuild I assume.
The oil is puddling up where the metal case and plastic meet on the OP switch... seen it on cars tons of times.
I usually let the bike warm up 3-4 minutes a with a high idle then set the idle down and go... Cant say I dont romp on it at that point because I have been known ....