Best Grease Guns of 2026

Ten thousand PSI and 5 ounces a minute are the two figures that settled this one for us. Pressure is what pushes grease into a fitting that has been dry for years; flow is what keeps a full chassis lube from eating an afternoon. Add the variable-speed trigger and you can feather grease into a tight joint instead of slamming a shot past the seal, and that combination is why the DeWalt sits at the top of this list.

The 42-inch hose is the detail we appreciated most once we were under a vehicle. It is long enough to loop past a backing plate or reach a driveshaft zerk without sliding the creeper forward, and the LED at the head earns its place when you are hunting a fitting in a shadowed wheel well. With the included 4.0 Ah battery aboard, the gun lists 14.8 pounds, and you feel that on the tenth overhead fitting.

Loading follows the usual cordless routine: drop in the tube, release the follower, cycle until the air works out. Budget a couple of minutes and a rag the first time. After that it is a quick gun, and battery capacity has been the least of our concerns over a long list of fittings. The three-year limited warranty is a fair match for a tool that lives in a truck bed.

What you accept in return is weight and cost. At 14.8 pounds this is the heaviest gun here, and the kit is the priciest in this group. Neither mattered to us with a truck up on a lift. Under a low car, a light manual gun still gets the reach and your shoulders get the break.

Where the DeWalt hands you a complete kit, the Milwaukee assumes the M18 batteries are already paid for. This is the bare tool, and nothing to charge it with comes in the box. What you get instead is the most controllable cordless gun in this group: two speeds, a lock-on trigger, an air bleeder valve for priming, and a 48-inch hose that is the longest here.

That controllability is the point. A pre-set grease counter lets you dial a number of strokes and repeat it fitting after fitting, which is what a service route really is: the same joint, forty times, every month. The slow speed is the one for a boot you do not want to split; the fast speed covers ground between fittings. At 9 pounds as a bare tool it is easier to hold overhead than the DeWalt, though the housing is chunky.

Chunky enough that a zerk tucked against a frame rail takes some angling, and that is the one place this gun frustrates. Otherwise the package is well thought out: the bleeder valve makes short work of priming a fresh tube, and the lock-on trigger saves your grip on long rounds. Buy it if the batteries are already in your shop. If they are not, the DeWalt kit is the better arithmetic.

A couple of Ryobi 18V batteries in the garage change the math on this gun completely. The P3410 lists the same 10,000 PSI as the premium cordless picks here and the highest flow rate of anyone in this group at 7.5 ounces a minute. On paper that is an absurd amount of grease gun for the money, and it is the one we point to when the greasing is a weekend chore rather than a job.

It is a tool-only purchase, so the battery and charger come out of your own stock, and the 30-inch hose is the shortest on any cordless gun here. That is fine for a tractor or a mower deck; on a long trailer you will reposition the machine more than you want to. The steel grease tube and the on-board LED both earn their keep.

Two things we noticed in use. The follower spring takes a firm pull to lock back when you load a tube, and the grip feels plasticky next to the Lincoln and Alemite manuals. Neither stops the gun from priming and pumping, and the light is a genuine help under a deck. Where the money went is the pump and the motor; fit and finish is where it did not.

This is a gun for a shop that already has air. The Lincoln 1162 lists 6,000 PSI, a variable-speed trigger, continuous operation, and a 30-inch high-pressure hose with a combination filler coupler and an air bleeder valve. At 5.6 pounds it is the lightest powered gun here, and noticeably less to hold overhead than either cordless.

Continuous operation is the feature we care about. There is no trigger to pump and no battery to run flat; you hold the coupler on the fitting and let the air do the work until clean grease shows. That is the rhythm of fleet and farm work, and it takes your forearm out of the job entirely.

The coupler asks for some patience. Seating the tip on a dry or painted-over zerk can take a push and a wiggle, and the fittings that have never been serviced are the fiddliest of the lot. Once it is on, the Lincoln builds pressure fast and primes without a fight, and the air bleeder does real work there.

The green paint is not why this gun has a following. The coupler is: it clamps onto the zerk and stays there while both hands work the handle. On a fitting buried behind a spring hanger, that single difference is the line between a clean job and a grease bath. The package includes the locking coupler, a rebuild kit, and an in-line swivel so the hose does not fight you around the chassis.

The rest of the gun is sensibly done: a 20-inch heavy-duty hose, a rubber grip, a loop-and-lock tab that stores the hose without dripping on the shelf, and 3.64 pounds that hang easily from one hand. One-handed operation is the whole point of the locking tip, because your other hand stays free for a light or a wrench.

Two limits come with it. The rating is 5,000 PSI, the lowest ceiling in this group, so this is a chassis-and-trailer gun rather than the tool for a fitting seized for years. And priming a fresh tube takes patience; the bleed procedure works, but a stubborn tube makes you earn it. Once it is bled, this is the manual gun we reach for when the fittings are awkward, and the coupler does work that no amount of leverage makes up for.

No lever gun will save your arm, and this one does not pretend to. What it delivers instead is 10,000 PSI from a 3.53-pound tool with no battery to charge and no air line to drag, out of a die-cast aluminum head with a vinyl grip. That is the highest pressure rating of any manual gun in this group.

Loading is the other reason we rate it. Three ways in: a standard 14-ounce cartridge, suction fill straight from a bucket, or fast refill off an Alemite loader pump. The 18-inch flexible hose handles the reach, and the bleeder valve turns priming into a short job rather than a wrestling match. Nothing about the filler end feels like an afterthought.

Where it lands for us is the long game. The aluminum head and vinyl grip cope with life in a truck bed, 3.53 pounds is light enough to work one-handed up a ladder, and the three-way filler means you can buy grease by the pail instead of the tube. If your grease goes into a tractor, a boat trailer, and a mower every season, this is the manual gun that ends the cycle of replacing a cheap one every other year.

The dual-lip follower is the part nobody prints on the box and every grease gun eventually lives or dies by. It is the seal that wipes the barrel as the spring pushes grease forward; when it is sloppy, grease slips past the plunger and you spend the afternoon bleeding air. Lincoln fits a premium dual-lip follower here, along with a cast pump head, a precision-machined plunger, and a jam-proof toggle that keeps the lever from locking up mid-stroke.

The numbers are honest for a manual: 7,500 PSI, an 18-inch whip hose with a coupler, and 4 pounds in the hand. The whip is flexible enough to bend around a brake caliper instead of fighting it, which a rigid extension cannot manage.

We also appreciate that it takes standard cartridges without ceremony: unscrew the cap, drop the tube in, release the follower, stroke until grease shows. There is no battery discipline and nothing to charge the night before, which is the quiet advantage of a lever gun that lives in a shed.

The honest trade is effort. Getting 7,500 PSI out of a lever takes a long, firm stroke, and a dry fitting will have you leaning into it. In exchange you get a tool with almost nothing to break and metal where the budget guns use plastic. For a trailer, a mower, and the occasional front-end joint, that is the right trade.

Twenty-seven inches of hose is the whole argument for this one. That is the longest reach of any manual gun here, and it is what lets you stand beside a machine rather than climb into it, past an engine block, through a frame gap, down to a fitting a rigid extension cannot angle into.

The rest of the package is respectable for the money: 6,000 PSI, two-way loading with a standard 14-ounce cartridge or bulk fill, a chrome-plated cold-drawn steel barrel, and 3.34 pounds that hang from one hand without complaint. The pistol grip and rubber sleeve are comfortable, and the yellow barrel is genuinely easier to spot in a dark shop than a black one.

Where it gets fussy is pressure at the tip. Grease flow can falter well before the tube is empty, and the fix is usually another round of bleeding rather than a new gun: open the bleeder, stroke slowly, and let the air out before you top up. That is the sort of thing you learn once and then stop noticing.

Buy it for the reach and the weight rather than as your only gun. As a spare that rides in the truck for the fittings a shorter hose cannot get to, nothing else here covers that ground, and the light body means it does not cost you anything to keep it there.