Fred,
    The anti-seize is a greased base metal compound .
 The grease clearly gets cooked by the exhaust but the
metal remains in the threads of the nuts and bolts and
prevent the like metals"nut and bolt" from
seizing"becoming one" by acting as a contaminent
between the two surfaces.  Perhaps you should try a
different type of anti-sieze?
                        gary
I have found that anti-seize is not any good on
exhaust fasteners.
The heat of the exhaust soon cooks it off and after
short period it is
like you put nothing on them at all.
It is a good idea, I use it.
But worthless on exhaust parts.
Good Morning,
Fred

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