Have several guns with Amsoil polymeric off road grease, pistol grip, lever action and pneumatic. Use it for suspension and steering components on the vehicles, tractors and ATVs.
Have one pistol grip running Amsoil synthetic multi purpose grease. I use it for universal joints, mower deck spindles etc. When it runs out I am going to try the polymeric truck and chassis grease.
I also have one pistol grip with John Deere SD polyurea grease. Have been using this for un sealed wheel bearings for the past couple years with good results. I have some Philips Polytac EP #2 to try when the Deere grease runs out.