... .shakeproof,reduce noise 4.extending the life of pumping unit The instruction of Dunba Power Saving & Maintaining additives for ... friction;3)repair attrition dynamically,maitain equipment,reduce repair cost of the equipment effectively;4)antiwear,reduce friction,reduce ... lubricants,is suitable for power-saving and maintainance of oil pumping unit. 5,Usage InstructionAdd mixed product to lubrication ...