1-2 years. Mechanical lubrication grease expiration time varies depending on the brand, model and use conditions and other factors, the quality assurance period of the grease is 1-2 years after production. In the shelf life of the storage of the correct, appropriate use, grease can be used normally, play its due lubrication effect. If the storage conditions are not appropriate or exceed the shelf life, the quality of the grease will change, resulting in reduced lubrication effect or failure.