Back when I had my Indie Shop I used only Hein Warner jacks and they'd last about 15 years before begging to leak or slowly drop .
Back then at least once a year some scruffy guy would come by and overhaul them for about $100 in a couple hours .
My Son finally convinced me to by a Chinese 3 ton trolley jack and it lasted close to 20 years, stored underneath an old vehicle parked on Concrete, I'm pretty sure he's still using it, I bought a new 3 ton Harbor Freight one on sale 15 years ago and so far I've only needed to add jack oil to it once .
Maybe I'll try the cute all aluminum low boy quick lift ones he likes for his racing .
As mentioned, never,
EVER fail to use safety stands ! not even for changing a tire .
Once you see a vehicle fall when a jack fails, you'll understand why this is so important .
I'm sure there are pictures on the internet of heads popped like rotten tomatoes from folks who 'only needed a minute' to work sands stands
.