The Locktite needs to be softened with heat and highest rated I think is Red at 500 degrees. So I aim for that if at all unsure which one may have been used. I like to use a high output propane torch right on the head of the bolt. Seems to be the fastest way with usually no damage to surrounding paint, surprisingly. And by that I mean, it still takes what seems a long time to heat up a small bolt to 500 degrees that is touching a large heat sink of a steel disc and aluminum wheel. Then use the impact with the tight fitting allen socket as was mentioned.
Mike