The first grade is coded Blue Removable No.242
The second grade is coded Red High-Strength No.271 which is applied to fasteners that you dont want to take apart for a long time. When you do want to remove a fastener that has been treated with Red, or Cherry Loctite, you may have to use heat from a torch or iron to loosen its grip when its time to remove the fastener.
third grade, which is dyed Green and is used on fasteners or studs that you dont want to ever remove, like cylinder studs or exhaust studs.
i'd do blue..