This is an ausom jack. I don't know why it has such a low rating. In the directions before using this jack it says to bleed it. There is air in the jack because of shipping. With that being said if you don't bleed it before use you will blow the seals. This will cause it to leak oil and not lift like it was designed to do. Just follow the simple directions that come with the jack and you won't go wrong.
Followed the set-up instructions for bleeding the valve. Jack worked well for 3 months then it started leaking and dropping under any load. Used in a homeowners garage, so nothing heavy was ever lifted. Worst part about it the Sears store would not stand behind the product and told me to bad.
First off, this thing is HEAVY. But you aren’t buying this because it’s light, you wanna lift heavy things (2011 Ford F450 Crew Cab Dually Diesel 4x4 in my case). It does its job. And has worked well for a couple years now.