[s-cars] "Unsticking" Lifters

[Calvin Craig]

OK, so my nephew ran the UrS4 down too low on oil and of course the lifters
were ticking.  I re-filled to the proper level and it quieted some, but not
like I would have expected.  It sounds like there is one that is not
"getting with the program" so to speak.  I have heard of putting in some ATF
fluid to make the lifter release.  Has anybody ever tried this?  if so, how
much should I put in?  Would changing to a synthetic help it release?  I
have been a little paranoid about changing to synthetic on a car with over
200k miles of dinosaur oil under its belt.  Thanks!

--Calvin