Thats the reason im asking. I dont wanna be a yo-yo! But yeah, this will be my first grease gun for my own personal use, and all brand new everything, so no worries there. I work in a heavy fab/metalworking shop, so i understand the importance of clean/usable zerks, and a good connection. I just wasnt sure if the grease had to be a specific rating since Itll be exposed to the elements.