After the oil and tire questions, what gasket sealer? is next....
I use
soylent green Hylomar Blue on the flange of the cover only, and oil or grease on the engine side.
The factory used sealant on the cover side, with only about a 1/2" smear of sealant on the motor side of the joint where the top and bottom crankcase halves join at front and rear of the cover joint.
The sealant whatever you use should be a THIN smear. No goobers of glop that get loose inside the motor, clog oil passages, and well you get it.
A heads; up the tach drive seal is usually shot, oil runs down and rearwards along the cover gasket....
spray with mineral spirits, ride a bit watch where the oil appears first, a bit of talc or foot powder huffed in the area helps quickly show where the oil is coming from.
I use copper washers on the bottom cover bolts and the oil filter cover bolts.
https://www.xs650.com/threads/rh-cover-leak.51364/post-540907
cover already COATED with Hylomar....
Don't be THIS guy.