When the cheapest mini excavator oil temperature exceeds 55 ℃, the oil oxidation will intensify and the Retro digger service life will be shortened. According to the data, when the oil temperature exceeds 55 ℃, the service life of the oil will be shortened by half for every 9 ℃ increase in temperature.appropriate quality grades should be selected according to the requirements of excavators, appropriate quality kymron excavator grades should be selected according to the requirements of excavators, and appropriate lubricant brands should be selected according to the working environment and different seasons of excavators. In use, neither low grade lubricants nor other pneumatic excavator types of lubricants can be used, nor inferior products can be doosan pneumatic excavator usedThe decrease of oil viscosity will damage the oil film at the moving parts and increase the friction resistance, causing the peanut digger system to heat up and the actuating elements (such as hydraulic cylinders) to crawl. The exavator yanmar decrease of oil viscosity can lead to increased leakage and significantly reduced system efficienc . www.haiqinmachinery.com