Cures for sticky lifters? '87 4kcsq

[cz137 at home.com]

I am sure that this has been covered here before, but alas I am new to the list.  One or more of the lifters on my new to me '87 4kcsq intermittently sticks.   tick tick tick tick.  I use Mobil 1.  What does the list wisdom reccomend as far as oil additives go?  BG MOA?  Marvel Mystery Oil?  What has worked for you?  Or is the only remedy to have the lifters replaced?  What makes them stick in the first place?  Thanks in advance:-)

If anyone knows the approximate date of the last in depth sticky lifter thread I would love to look it up in the archives.

Cory
'87 4kcsq
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