Operating temperature -30 to +180 degrees Celsius. Silverhook White Grease is a multi-purpose spray grease that penetrates metals parts and joints, and dries white in colour. It contains PTFE and is calcium enriched to help reduce friction and dissipate heat. Its non-drip formula means it remains in place. Silverhook Silicone Grease is suitable for most types of general lubrication; including for use on cars, vans, commercial vehicles/home, door locks, windows, hinges, gates, padlocks, mechanisms and much more.