I recently got a Dewalt 20v cordless grease gun. Thought it was a silly idea until I tried it on my tractors. Wow! What used to take a half hour is now done in a few minutes. Powerful enough to blast through crud on neglected grease fittings. I put a LockNLube coupler on it to help latch on to fittings in hard to reach places, makes greasing a one-handed job. Only downside to this grease gun is that I go through a lot more grease cartridges now. Great for folks with heavy equipment.