I have been driving a 50 AD for 3500 miles without any anti-squeak and have no squeaks, groans, rumbles of any kind. My opinion so far, is that this stuff is over-rated/unnecessary. Since you can't see it once installed, no one knows the difference. I am sure there was a reason Chevrolet used it.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission