Product performance: For transmissions with more complex gear configurations, more planetary gears, and more frequent shifting, it has a more prominent oil film protection. Based on its structure and working characteristics, the friction coefficient is optimized, the viscosity index is improved, and in-depth research is conducted on fast shifting and shift response speed, carefully modulated. Breakthroughs have been made in energy conservation, emission reduction, smooth gear shifting, and higher requirements have been put forward for transmission oil. Guinness has made breakthroughs in ultra-high viscosity temperature performance and ultra-high extreme pressure and wear resistance, providing comprehensive oil film protection for planetary gears exceeding 10000, improving driving experience.