Heavy-duty truck lift hydraulic systems have strict requirements for oil viscosity, as ambient temperature significantly affects fluid flow characteristics. In winter, when temperatures drop, #32 hydraulic oil (lower viscosity) is used to ensure optimal fluidity in cold conditions, preventing startup difficulties or insufficient system pressure. Conversely, during summer, #46 hydraulic oil (higher viscosity) is employed to maintain adequate oil film strength under high temperatures, protecting hydraulic components from wear and ensuring stable system pressure.
Failure to seasonally adjust oil grades may result in winter issues like sluggish operation due to overly thick oil, or summer problems such as reduced sealing performance from overly thin oil. Thus, selecting the appropriate viscosity grade based on seasonal temperature variations is critical for ensuring operational efficiency and prolonging the equipment’s service life.
