VEVOR Hydraulic Pump, 6 Quart/1.5 Gal Double Acting Dump Trailer Pump DC 12V, 3200 PSI Max Relief Pressure, Electric Hydraulic Power Unit for Dump Trailer Car Lifting (with 6pcs SAE #6 Connectors)

Here is the link to the manual:https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/%E5%8F%8C%E4%BD%9C%E7%94%A8%E6%B6%B2%E5%8E%8B%E6%B3%B5%E8%AF%B4%E6%98%8E%E4%B9%A6_1650791193682.pdf.<br/>

The line only needs to be connected to the positive and negative poles.You can connect multiple oil circuits.

This item is expected to be restocked on December 21st.

2 gallons.

No, the function will not move slowly if the button is pressed slightly but not fully.