The new style pumps do not require grease for lubrication. Make sure to clean the inside of the barrel once or twice a year for maximum performance.
Carlson Pumps with GREEN hoses (older style)
The old style pumps require grease to keep the piston working smoothly inside the chamber. To apply the grease open the top of the pump and lubricate the O-ring inside the pump. Close the pump and pump up and down about 5 times. Use blue lithium grease to lubricate your pump. This is a boat trailer axle/marine grease that will not attract sand.