Originally Posted by ExoticFish
Luckily it looks like tightening the bolt stopped the leak. Will know for sure tomorrow.
That may be where it is dripping
from, but that is not the source of your leak
. That bolt is only holding your transmission inspection plate on, so tightening it will not stop the leak. Doing that may form a tighter seal between the plate and the transmission and slow the drip for a short period of time, but it will fill up until it finds a new place to drip from (and most likely make a worse mess than it would if you just let it drip). You need to check your valve cover gasket and hope it is leaking down the back side, but most likely it is your rear main seal.