10 Best Grease Guns 2025 in the United States

The DEWALT 20V MAX Grease Gun stands out in the grease gun category, thanks to its impressive features that cater well to both professionals and DIY enthusiasts. With a powerful motor delivering up to 10,000 PSI, this cordless grease gun can efficiently tackle clogged grease fittings, making it a reliable tool for automotive and heavy machinery maintenance. Its high-volume pump pushes out 5.0 oz/min, which ensures quick application for larger jobs.

One of the standout features is the 42-inch long flexible hose that allows access to hard-to-reach areas, which is particularly beneficial when working in tight spaces. The variable speed trigger offers control over the grease flow, providing precision for delicate tasks. Additionally, the bright LED light helps in illuminating dark work areas, which enhances usability.

On the durability front, DEWALT is known for producing sturdy tools, and this grease gun is no exception. The no-mar foot design allows it to be rested on flat surfaces without causing damage, and the air-bleeder valve aids in efficient pump priming after cartridge changes. Furthermore, the three-year limited warranty and money-back guarantee add peace of mind for potential buyers. The DEWALT grease gun is sold as a bare tool, meaning you will need to purchase the battery separately, which can be an added expense if you don’t already own DEWALT's 20V MAX batteries. Weighing in at 8 pounds, it might feel a bit heavy for prolonged use, especially for those who are not accustomed to handling such tools. Additionally, while the price point is justified by its performance, it may be higher than some budget models, making it less accessible for casual users. This grease gun is a solid option for those who require efficiency and reliability from their tools, particularly in professional settings, while casual users might find the investment to be significant unless they plan to use it frequently.

The LockNLube Heavy-Duty Pistol Grip Grease Gun stands out in the grease gun category, particularly for those who need a reliable tool for both commercial and residential use. One of its key strengths is the patented LockNLube Grease Coupler, which effectively locks onto the fitting and prevents leaks, making the greasing process cleaner and more efficient. This feature, combined with a robust pressure rating of up to 5,000 PSI, ensures that you can tackle various greasing tasks with confidence.

The 20-inch heavy-duty hose and in-line swivel add to its usability, allowing you to reach tight spots without hassle. Ergonomically designed with a rubber grip and comfortable handle, this grease gun minimizes hand fatigue during prolonged use, which is a big plus for both professionals and DIY enthusiasts.

It's essential to consider some drawbacks. The fact that it is hand-powered might not appeal to everyone, especially if you're looking for a more automated solution. While most users find it easy to operate, those who require extensive greasing might prefer a battery-operated or pneumatic option for speed and efficiency.

The Milwaukee 2646-20 M18 2-Spd Grease Gun stands out in the grease gun category due to its impressive features and user-friendly design. With a maximum operating pressure of 10,000 PSI, it provides significant power, making it suitable for heavy-duty applications and ensuring efficient lubrication for various machinery and equipment. The 48-inch flexible hose is a notable advantage, allowing users to reach difficult spots easily, which is often a challenge with traditional grease guns. Additionally, the air bleeder valve simplifies priming, helping you get started quickly without hassle.

User convenience is enhanced with the lock-on/lock-off trigger feature, allowing for more controlled operation during lengthy tasks, reducing fatigue. The inclusion of a pre-set grease counter dial is a unique touch, helping users track how much grease is dispensed, which is particularly helpful for maintenance tasks that require precise measurements.

However, there are a few drawbacks to consider. Firstly, this model is sold as a bare tool, meaning that you will need to purchase the battery and charger separately if you don't already have them, which could add to the overall cost. Moreover, while the metal construction contributes to its durability, the device's weight of 4.21 pounds might be a bit cumbersome for some users, especially during prolonged use. With a 5-year warranty, Milwaukee also shows confidence in the product’s longevity. If you're looking for a powerful and efficient grease gun for automotive or industrial applications, the Milwaukee 2646-20 is a strong contender despite some additional investment in accessories.