I’ve gone through a number of generic Chinese aluminium jacks over the last 15 years, 1250kg and a few designs of 1500kg jacks.
My main advice to anyone buying an aluminium jack - get the one with the best warranty and support you can.
Ive used them as my primary jack since the mid-00s on European compact and mid size cars and suvs, never broken any of the chassis on them, however:
- you have to be really careful to use them on a flat surface, I rolled one over sideways in a junk yard and bent the frame.
- they don’t roll well on anything other than mirror flat concrete, so position the jack in a way it can pull the vehicle towards jack, otherwise it may slide off the jack pad.
- they fall apart, remove every fastener and reseat it using thread lock when you buy one
- some are good, some are bad, hence buying one that you can return for repair/replacement.
I’ve gone through about 6 power units over the years, some leaking within days of coming out the box, some lasting years. My current one is around 8 years old and still works!