Locktite has different fluids. I always use the blue stuff. Because in RC we use tiny screws and bolds the blue stuff is the best. If you use the red stuff you will find it hard to unscrew and will damage the screws and bolts. The simply won't come loose. I'am the one to know because I used the wrong stuff and had to use drill.
Even if you use locktite, make sure to check your heli before every flight.
Only use it to lock metal parts together. If you use it on plastic or other materials it won't work or damage the other materials.