Now this might sound a light on the lite side but I have had a few different answers over the years. And I am getting tires of always having to reinstall an OEM and an aftermarket thermostat housing that leaks quickly or over time (not a long time)I have been advised to just go metal to metal with silicone, OEM gasket with silicone, aftermarket runner gasket - metal to metal and I can go on. Probably should make this a "pool", but I won't. Any ideas and your thoughts.