All silicone is anerobic and dries/hardens due to the lack of moisture. ultra anything by locktite is sensor safe,red,grey,blue,black.

Proper use is not only dependant on the fluid to be sealed, the pressure has to be included, i.e. turbos.Ggaskets and sealants are equals and combined properly are the state of the art. Combined halfassedly are shit. Learn. If you glue one side of a gasket securely (gaskacinch) and grease the other side, it will never blow out or leak. It has an anchor on one side and it has give for thermal expansion with the grease on the other side. Even tourqued down it flexes but only so much under heat and pressure and returns to its initial strength, integrity when it cools down.

I love using ultra black for exhaust on hot rods that will be taken apart eventually, slather it in on both pipes and tighten the u-bolts just enough to where it doesn't twist anymore, let sit till tomorrow and drive. If you don't like the sound and want to switch, they come right apart. If you like it lasts for years and still comes apart easily when the mufflers rot out.