Fracture or cracking of a polycarbonate molding?

The fracture or cracking of a polycarbonate molding has been known commonly caused by residual stress, tensile stress from a tension applied and the presence of ketone solvent & other possible chemicals. Does Shell Avania Grease EP contains any of the ketone solvent or any other chemicals that may bring to chemical degradation to a polycarbonate moldings that uses the grease and result in fracture or crack ?