Threadlock is to keep the bolts in place. Anti seize is to aid in them coming off. I use anti-seize on my lugs because if I ever have to take the car into a shop, I know they are going to overtighten with an impact.
I've only used threadlocker on the car once, when I made my own shift knob. If you are able to torque the bolts down properly, I don't see much need for threadlocker.

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1984 300TD