Milwaukee M12
Milwaukee M12 Grease Gun
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Is the Milwaukee M12 Grease Gun worth it?
The Milwaukee M12 Grease Gun is a solid option with clear trade-offs. Its biggest strength: cordless. The main caveat: battery sold separately.
Pros & cons
Pros
- Cordless
- Compact M12 platform
- High pressure
- LED fuel gauge
Cons
- Battery sold separately
- Price
- Smaller battery runtime
Should you buy the Milwaukee M12 Grease Gun?
Think twice if this matters to you
- Battery sold separately
- Price
- Smaller battery runtime
Compared with
Buying advice: grease guns
- Lever for power, pistol-grip for one-handed access, cordless for volume.
- Flexible hoses reach fittings behind wheels and under equipment.
- Locking couplers hold onto fittings and reduce leaks.
- 14 oz cartridges are standard. Check compatibility.
- A bleeder valve helps release trapped air when loading.
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Milwaukee M12 Grease Gun: common questions
Is the Milwaukee M12 Grease Gun worth buying?
The Milwaukee M12 Grease Gun is a solid option with clear trade-offs. Its biggest strength: cordless. The main caveat: battery sold separately.
Who is the Milwaukee M12 Grease Gun best for?
Based on our research it suits pros on M12.
What are the downsides of the Milwaukee M12 Grease Gun?
The main trade-offs owners and reviewers point to: battery sold separately; price; smaller battery runtime.
Where can I buy the Milwaukee M12 Grease Gun?
It's sold on Amazon. Prices and stock change often, so check the current listing before you buy, our link takes you straight to it.
How do I know how much grease to inject into a fitting?
Over-greasing is as damaging as under-greasing, excess pressure blows the grease seal and expels the grease that was protecting the bearing. For most automotive and light-equipment zerks: inject until you see fresh grease appear at the seal lip. Count the number of pumps and record it for future reference, a wheel bearing might take 3 pumps, a U-joint 1 pump. For fittings with a grease nipple that vents: pump until the vent releases. Do not force grease against resistance, if a zerk feels blocked, switch to a needle coupler and check the fitting before continuing.
What type of grease should I use?
NLGI grade 2 multipurpose lithium grease handles most automotive chassis, wheel bearing, and general purpose applications. For high-temperature applications (brake components, oven conveyor bearings): use a high-temp red grease rated for the operating temperature. For marine or wet environments: a water-resistant marine grease. For food-processing equipment: NSF H1-rated food-grade grease. Do not mix grease types, different base oils and thickeners are chemically incompatible and can break down lubrication properties. If switching grease types: purge the old grease fully before switching.