This product is used as vehicle oil. No. 6 hydraulic transmission oil is mainly used in diesel locomotive, heavy duty truck, tracked car, off-road vehicle and other large vehicles, such as hydraulic torque converter and hydraulic coupler. It is also suitable for hydraulic transmission system of construction machinery. No. 8 hydraulic transmission oil is suitable for all kinds of small leveling car, light truck hydraulic automatic transmission system, etc. Product characteristics ① It has suitable viscosity and good viscosity-temperature performance. ② It has good thermal stability and anti-oxidation stability. ③ It has good low temperature fluidity, wear resistance and foam resistance.