If you don't have access to hydraulic jack oil, you can use machine oil or 10/20W lightweight motor oil in a pinch. Automatic transmission fluid will also work if you don't have any other options.
What kind of oil do you put in a jack?
A bottle jack requires hydraulic oil. This type of oil is a liquid lubricant used to send power throughout hydraulic systems. Hydraulic oil provides good lubrication, protects from rust and oxidation and has low foaming characteristics.
What is the best oil to use in a hydraulic jack?
The Lucas Oil 10019 is specially designed for brake systems but will also work perfectly with your hydraulic jacks or any other equipment.