23+ How To Fill A Hydraulic Floor Jack With Oil Pics . Fill the reservoir with hydraulic jack oil. Pour until the oil is just below the lower rim of the fill hole, then stop. How To Fill The Hydraulic Jack Oil Tools Blog from leagueoftools.com I needed to know how to put hydraulic fluid in the floor jack, and now i think i can do it! john amick. Hydraulic jack fluid (per manufacturer's specifications). In most cases, the optimal oil levels for hydraulic jacks. Sae 30 makes it more like it is filled with concrete. Remove the oil fill plug and look. Choose either a hydraulic floor jack or a hydraulic bottle jack. All the jack oil i ever bought was just iso32 hydraulic oil. Putting oil in hydraulic fluid jack is easy through the tricky process. Source: autoaidoutlet.com Below is a good video on how to properly bleed and fill a hydraulic jack. ...