Constant OY oils are technical products free from silicone raw materials for sintered metal plain bearings subject to high and low temperatures. Due to their special product formulation and additives, they cover a wide service temperature range, offer good anticorrosion properties, and in many cases can even be used for lifetime lubrication of sintered metal plain bearings. Constant OY oils are intended for use in sintered metal plain bearings in precision engineering, automotive and electrical applications as well as household appliances.