The latest generation of battery-powered grease guns can produce up to 10,000 psi. Rohan says 7,500 psi is generally adequate for farm use ... It’s best to store grease tubes vertically.

But have you used Ryobi's battery-operated grease gun? Home Depot also features other selections of battery-operated grease guns, including the Milwaukee M18 18V cordless gun at $229. The battery ...

Both inspired catchy nicknames, the “Tommy Gun” and the “Grease Gun,” respectively ... John Taliaferro Thompson, who had ...