There are many kinds of lubricating greases, many brands, and different performances. Grease is more perishable than oil, and it is difficult to deal with impurities mixed in the grease. Therefore, it is of great significance to strengthen the quality management in the storage of lubricating grease.
The introduction of impurities and moisture from the outside; physical or chemical changes in the oil itself.
Oxidative deterioration, destruction of lipid colloidal structure, separation and loss of grease, mixing of foreign matter, aging of grease (hardening, loss of lubrication)