This standard specifies the minimum requirements for hydraulic oils HVLP). Hydraulic oils (HVLP) are petroleum based fluids with additives to improve corrosion prevention, oxidation stability, fretting wear protection and viscosity-temperature behaviour.
DIN 51524-3:2006 Referenced Document
DIN 51350-6 Testing of lubricants - Testing in the Shell four-ball tester - Part 6: Determination of shear stability of lubricating oils containing polymers