Inquiry (采购产品): 893 04 The pump is making a little more noise --noted that housing should be kept full of liquid--how do I remove and replace plug and what liquid do I use to refill the housing. Thanks **** Hidden Message ***** Lin Learie 14731 Company: marine app. recreational E-mail: lr4r@hotmail.com **** Hidden Message ***** lr4r@hotmail.com
