Palm fiber is a by product from raw palm oil extraction process of fresh palm fruits. by receiving from shell of palm fruits and has characteristic of fiber with toughness, durability and good air circulation. From oil press process, there is much fiber coming from press with much content. Which within this fiber will also have oil sticking out. In order not to loss oil more than standard criteria defined at the factory,we need to cheak oil loss in the production process.Plam fiber example for theoil loss measurement is dried by moisture analyzer(Mettler Toledo). and then taking them to extract to find oil content sticking out with fiber from the press. Which taking fiber from the press to extract to find the content of percent loss of oil can examine and analyze the value that receive in order to adjust or revise in part of production process and machines used in company. The press with the least oil percentloss value is head 2 and the press with the mostoil percent loss value is head 5which all oil percent loss value are placed in benchmark that the factory fixed.