I've never been one to buy any of the miracle products out there. Well, except for Seafoam. I do use that.
I have a floor jack that slowly creeps down when under load. I heard about this product, AT-205 re-seal, from my brother-in-law and decided to try it. I have to report that it works.
It might work for those with hydraulic lifts that have seal leakage.
Your results may vary.