I haven't had any leaks with Amsoil but if I run it real hard I have noticed a few drops from the crank breather tube.
No big deal, just didn't do that before with the carbon Harley oils.

Never does that for rides around town, just real hard, long rides.
Leads me to believe Amsoil is getting into places the Harley oils never saw before.

I've got an epoxy garage floor so I just keep an eye on that and wipe it up with the swipe of a finger.