Choosing the best grease gun is really a matter of what your specific needs and goals are, or the jobs you’re planning to take on. 

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In this post we compare four industry-leading grease guns on their power, battery capacity, weight, rating, and price:

The truth is, all of these grease guns are good enough for most jobs you can throw at them. And they often share the same specifications, despite being from different brands. But there are a few standouts in some of these categories that might just sway your mind. Take a look.

Most powerful grease gun

When it comes to power, most personal grease guns share the same maximum power at 10,000 PSI. In this category, there’s really no clear winner.

  • The Milwaukee M18™ Cordless 2-Speed grease gun has a maximum pressure of 10,000 PSI.
  • The Makita DGP180Z 18V LXT Cordless grease gun has a maximum pressure of 10,000 PSI.
  • The RYOBI 18V ONE+ Lithium-Ion Cordless grease gun has a maximum pressure of 10,000 PSI.
  • The Dewalt 20V MAX* grease gun has a maximum pressure of 10,000 PSI.

Best battery capacity grease gun

Three of these models have the same battery capacity at 18 volts. There is one exception: the Dewalt 20V MAX* grease gun stands above the rest. 

  • The Milwaukee M18™ Cordless 2-Speed grease gun uses 18V M18™ REDLITHIUM™ batteries.
  • The Makita DGP180Z 18V LXT Cordless grease gun uses 18V Lithium-Ion batteries.
  • The RYOBI 18V ONE+ Lithium-Ion Cordless grease gun uses the RYOBI ONE+ 18V Battery. 
  • The Dewalt 20V MAX* grease gun uses the 20V MAX* DCB204 Battery.

Lightest grease gun

When it comes to weight, you do start seeing some significant differences across these grease guns. The lightest grease gun is the Ryobi 18V cordless gun, with the Milwaukee M18 not far behind. As for heaviest, the Makita is far and away the chunkiest of the bunch.

  • The Milwaukee M18™ Cordless 2-Speed grease gun weighs 7.6 lbs.
  • The Makita DGP180Z 18V LXT Cordless grease gun weighs 10.0 lbs. 
  • The RYOBI 18V ONE+ Lithium-Ion Cordless grease gun weighs 7.1 lbs.
  • The Dewalt 20V MAX* grease gun weighs 8 lbs.

Best rated grease gun

None of these grease guns have a bad rating. Users are overwhelmingly happy with all of these options. But when it comes down to brass tax, Dewalt owns the highest rating, with people really loving the Dewalt 20V MAX* grease gun.

  • The Milwaukee M18™ Cordless 2-Speed grease gun is rated 4.7/5 stars on Amazon.
  • The Makita DGP180Z 18V LXT Cordless grease gun is rated 4.6/5 stars on Amazon.
  • The RYOBI 18V ONE+ Lithium-Ion Cordless grease gun is rated 4.7/5 stars on Home Depot. 
  • The Dewalt 20V MAX* grease gun is rated 4.8/5 stars on Amazon. 

Best priced grease gun

Finally, everybody wants to know how these guns compare on price. The following prices are for the tool only and not any of the upgrades. 

As expected, the RYOBI is significantly cheaper than the competition. Among the bigger name brands, the Milwaukee grease gun may offer the best bang for your buck.

Please note: these tools may change in price and they frequently go on sale, so prices may not be accurate at the moment you are reading this. Sign up for our newsletter to track the best deals on power tools. 

  • The Milwaukee M18™ Cordless 2-Speed grease gun costs $199 USD.
  • The Makita DGP180Z 18V LXT Cordless grease gun costs $239 USD.
  • The RYOBI 18V ONE+ Lithium-Ion Cordless grease gun costs $159 USD.
  • The Dewalt 20V MAX* grease gun costs $259 USD.