After 10+ years, I've replaced the original plug with a new one of the same material. The old one was starting to feel brittle. Replacement plugs of different plastics might not have the same life.
I've always used a short handle adjustable wrench, find I can get it into the space more easily than a socket and I have a better feel for just how tight I am getting the plug. I remove the plug to drain the tank each time I put the RV into storage.
I've used no tape, the plug is tapered and seals well when tightened properly.