[Superman]

Do NOT use red loctite unless the manufacturer specifies it. I'd start with the purpose and move up, of the fastener still comes loose.

Mechanics use various strategies for removing stubborn fasteners, depending on the situation. They love using heat on many stubborn fastener situations and they all have an oxy/acetylene setup. For a penetrant, I use Maltbys. Everybody thinks their penetrant is the best and the people who Maltby's is the best are correct. And I tap on the fastener first. Maybe give the penetrant some time to dissolve corrosion. I might tap as I try to loosen. Again, heat helps. I might try turning it clockwise first. When all fails, I use reverse drill bits and Snap-On screw extractors.

Don't use red loctite unless the manufacturer specifies it.