Antiwear, ashless hydraulic oils. Hydraulic systems operating under high pressure and/or temperature conditions. High-pressue vane, piston or gear pumps. Sensitive hydraulic circuits requiring absolute filterability of the fluid (very fine servo valve play) : plastic moulding machines. Any hydraulic system where the risk of contamination of the environment and waters exists. Any application where an antiwear, high-performance oil is necessary : various movements, plain bearings and rolling bearings, reducers under low load, etc. Lubrication of circuits in which the presence of water is accidental : machine tools, farm and food products industries, paper mills, steel making, etc.