Mike L
Senior Member
just bought a portable electric hydraulic pump and the paperwork says it takes #15 hydraulic oil. Googled it and I get aw15 hydraulic oil. The lightest oil my local parts house can find is hydraulic jack oil which is aw22. Figure i need 2 gallons to fill the reservoir. Is there an equivalent to #15 or do I need to order some? I know some of that stuff will run off atf or Mobil 424 which is readily available.