It doesn't say loctite in the stm instructions. I just don't get this secondary bolt issue. I put my stock secondary back like the instructions said and I'm going to tell you the 15 lbs was nothing but the 180 degree was tuff. I thought I was going to break the bolt before I got 180 degrees. I don't see that bolt backing out if installed correctly. The dealers or who ever must be tightening 15 lb and that's it.