We use the green on a lot of the farm machinery. Its a step below the red in strength but will wick and flow into voids. Also We are out of red at this time and this was on hand. Loctite comes in red, green, blue, and purple and also in several grades. Here is what Loctite says:
LOCTITE® Green Threadlocker
LOCTITE® green threadlocker is recommended for locking preassembled fasteners, e.g. electrical connectors and set screws, and prevents against loosening, rust, and corrosion. This wicking grade threadlocker is categorized as a medium-to-high-strength adhesive. Also available in a liquid form, LOCTITE® green wicking threadlocker cures in 24 hours and can be removed with hand tools and, in rare instances, may require heat to assist when threads have excessive engagement lengths.