Hoisting - Page 5 - Recent Questions, Troubleshooting & Support

"A jack lift is a mechanical device used as a lifting device to lift heavy loads or apply great forces. Jacks employ a screw thread or hydraulic cylinder to apply very high linear forces.A mechanical jack is a device which lifts heavy equipment. The most common form is a car jack, floor jack or garage jack which lifts vehicles so that maintenance can be performed.More powerful jacks use hydraulic power to provide more lift over greater distances. Mechanical jacks are usually rated for a maximum lifting capacity (for example, 1.5 tons or 3 tons)." (Wikipedia)

You purchased jack stands, they aren't intended to lift the car, merely to support them after you've raised the car with a jack.

Do you see a hole for the plug? It's leaking some oil?

chain hoists are heavier, and are more susceptible to rust, although wire hoists can also rust