Thread sealant

“Sealing that thread should not be that difficult”
I know….
Either I am getting senile in my old age or just have bad luck with this car.
The silliest little things are causing me problems.
I sure hope you are wrong about the gasket.
The leak is a constant drip when the system is pressurized and only weeps when cold.
I already pulled the bolt so I am going to reseal, using more sealant, and probably let it sit overnight (or more) before I fill the cooling system.
Per my previous post, I hope to hear how long other people wait for the sealant to cure.