Railway locomotive engine oil is a special lubricant developed specifically for diesel engines in railway diesel locomotives. It is formulated to adapt to the operating characteristics of locomotive engines, including high load, prolonged idling, continuous traction, and harsh working conditions (dust, vibration, large temperature differences).
Its core functions are to lubricate, cool, clean, seal and prevent rust for key engine components such as pistons, crankshafts and bearings. It must also meet industry requirements for extended oil drain intervals, high anti-wear performance and strong oxidation stability. As a key consumable, it ensures the safe, stable and long-term reliable operation of railway locomotives.