? Anode "Nut" Question -- Anti-Freeze 'Stuff"?

If you put enough Teflon tape on it to prevent metal-to-metal contact it will not corrode. It will also not protect the shell of your water heater unless you rig a ground wire of some sort to electrically bond the anode to the shell.

If you're going to put a lot of tape on it and do nothing else you might as well replace the anode with a simple pipe plug and forget about it.

I suggest using the paste product.