manual transmission

Find an independent Mini or BMW specialist or a transmission shop and ask them for a hands-on diagnosis. Don't just phone them, you won't get a thoughtful answer. I don't believe that the transmission would have to be replaced for a leak, sealed or not, although it may have to be removed to repair it. Also, make sure it's really leaking before getting into an expensive repair. If you want to find a Mini specialist, here's our directory link for you: https://repairpal.com/mini-repair-in-emporia-kansas PS: If you're going to an oil-changer place, don't. The good, qualified technicians don't work at those places, generally. Find a pro. Good Luck.