as a kind of hydraulic press brake,it must need hydraulic oil to run,but how many oil does this machine need? we think less people know this.now,the quantity should be two big buckets.you do not need to worry why this machine needs so much oil. because this only need to change per half a year,we only want to remind that you should use the good brand oil for your press brake machine,because it has better anti-abrasion.