[Towncar]

I used a small amount of Permetex RTV Blue due to it's strength against oil. Just have to make sure the gluing surfaces are super clean, then wipe the area with 99% alcohol as well, wouldn't want any silicone pieces wandering through the trans.

I don't use oem filters there or anywhere else for the same reasons as ltdltc. I also change the fluid in the trans every 30k miles, and use Lubegard red in mine.

Yes, there's a drainplug in the torque converter.