As atom points out the load I will add there is no heat so you can use either just rember red comes in more then one grade like 262 is the high strength I want to say the 242 is medium but I am getting older. I use blue permatex thread locker on the crank drive for my blower and it holds up well I also have pulled the rotor and found they use a blue grade also but to be honets I wonder if permatex has loctite make theirs for them.
Well it appears that they come with blue loctite from factory; I know my old Harley used loctite also.
I agree I would just as soon use none, but I also don't want rotor coming loose. Thanks for the responses.