美孚液壓油-傳動油8號瑞安樂清市直營店s core function is to transmit energy through liquid kinetic energy while providing lubrication and protection for components such as torque converters, clutches, and gears, and to regulate friction characteristics to meet shifting requirements [2]. This oil is based on mineral or synthetic oil, with additives such as wear inhibitors and antioxidants, featuring a high viscosity index, thermal oxidative stability, and low-temperature fluidity, suitable for a wide temperature range of -40°C to 170°C [3]. It is categorized into two types: No. 6 and No. 8. No. 6 is primarily used for hydraulic transmission systems in diesel locomotives, heavy-duty vehicles, and construction machinery, while No. 8 is compatible with automatic transmission systems in passenger cars and light trucks