Best Grease Gun for a Tractor (2026)
Four pistol-grip grease gun kits for tractor service, 3000 to 8000 PSI, compared on pressure, hose, couplers, capacity and warranty.
On this page
Top picks at a glance
As an Amazon Associate I earn from qualifying purchases.
- 1
Best OverallThorstone Grease Gun9.6/10View on Amazon - 2
Best 8000 PSIUTOOL Grease Gun Kit9.7/10View on Amazon - 3
Best KitSeesii Grease Gun Kit9.7/10View on Amazon - 4
Best CompactKRETLAW Mini Grease Gun9.5/10View on Amazon - 5
ZEELINE BY MILTON Grease GunView on Amazon - 6
LubriMatic LS-CGG-RED Clear Lever Grease Gun Red EndsView on Amazon - 7
PROLUBE Heavy Duty Lever Grease GunView on Amazon
The back forty is mowed, the fence line is trimmed, and the tractor is parked with a day’s worth of dust on the deck. Grease zerks on the mower deck, steering and PTO shaft do not service themselves, and a dry fitting wears fast. This guide covers the best grease gun for a tractor: four pistol-grip kits compared on pressure, hose, couplers and warranty, so the next service day goes smoothly.
AcreMowerLab earns a commission when you shop through links here. It never changes your price. Affiliate disclosure.
Quick picks
- Best Overall Thorstone Grease Gun: 7000 PSI with a 10,000 PSI flexible shaft and a 7-piece kit with 2 rigid pipes, backed for life. Check price on Amazon
- Best 8000 PSI UTOOL Grease Gun Kit: 8000 PSI pistol grip with quick-release coupler, air bleed valve and a stated 12 month warranty. Check price on Amazon
- Best Kit Seesii Grease Gun Kit: 8000 PSI with 90° adapter, 3 couplers, rigid pipe and thickened steel barrel at 3.4 lb. Check price on Amazon
- Best Compact KRETLAW Mini Grease Gun: 3000 PSI mini gun with 2 cartridges, 12 in hose and gloves at 2.03 lb for tight spots. Check price on Amazon
Our acreage picks
UTOOL 8000 PSI Pistol Grip Grease Gun Kit
An 8000 PSI pistol grip grease gun kit with an 18 in resin flex hose, basic and quick-release double handle couplers, air bleed valve and loop and lock storage, with a stated 12 month warranty. The ergonomic pistol grip works one-handed and the rubber sleeve adds grip in greasy conditions.
Who it's for: anyone who wants the highest PSI with a stated warranty term.
Who should skip it: buyers who need rigid pipes for deep zerks; the Thorstone includes 2.
Read the full review
The UTOOL is the pressure pick: 8000 PSI through an 18 in resin flex hose, with a patented push-lock-lubricate coupler and a second basic coupler in the box. The pistol grip works one-handed, the rubber sleeve adds grip, and the loop and lock storage keeps the hose tidy in the barn.
Pros
- 8000 PSI, the highest figure here
- Quick-release double handle coupler plus a basic coupler
- Air bleed valve releases air pockets with one push
- 12 month warranty stated
Cons
- Warranty excludes accessories
- 4.13 lb, the heaviest here
- No rigid extension pipe stated
- No safety certification stated
Seesii 8000 PSI Grease Gun Kit with 90° Adapter
An 8000 PSI pistol grip grease gun kit with a 90° adapter, 12 in flexible hose, rigid pipe and 3 couplers in a thickened steel barrel, at 3.4 lb with no warranty term stated. The 90° adapter and storage clip suit equipment with buried fittings.
Who it's for: farm equipment with hard-to-reach fittings.
Who should skip it: anyone who wants a stated warranty; the UTOOL and Thorstone give terms.
Read the full review
The Seesii is the tight-spot pick: 8000 PSI with a 90° adapter and a 12 in flexible hose for zerks buried under guards, plus a rigid pipe and a storage clip for the coupler. The thickened steel barrel and ergonomic pistol grip suit long greasing sessions on farm equipment.
Pros
- 8000 PSI with 90° adapter for tight fittings
- 3 couplers: quick-release, universal and pointed
- Thickened steel barrel; handles greases up to NLGI #2
- 3.4 lb, the lowest weight of the full-size kits here
Cons
- Title says 4 nozzles, bullets describe 3 couplers
- No warranty term stated
- 12 in hose is shorter than the 18 in hoses here
- No safety certification stated
Thorstone 7000 PSI Pistol Grip Grease Gun Kit
A 7000 PSI pistol grip grease gun kit with an 18 in spring hose, lock and reinforced couplers, sharp nozzle and 2 rigid extension pipes, backed by lifetime product support. The die-cast head and air release valve suit repeated loading, and the listed uses cover tractors, PTO axles, steering cylinders, universal joints and lawn mowers.
Who it's for: tractor owners who grease PTO shafts and steering joints often.
Who should skip it: anyone who wants the highest PSI here, which is 8000.
Read the full review
The Thorstone is the kit pick: 7000 PSI with an 18 in spring hose, a lock coupler, a reinforced coupler, a sharp nozzle and 2 rigid extension pipes for hard-to-reach zerks. The listing suits it to tractors, PTO axles, universal joints and lawn mowers, and the flexible shaft is listed at 10,000 PSI, which is the shaft figure, not the gun figure.
Pros
- 7-piece kit: lock coupler, reinforced coupler, sharp nozzle and 2 rigid pipes
- 10,000 PSI flexible shaft stated for stubborn fittings
- Four loading methods: cartridge, bulk, suction and filling pump
- Lifetime product backing stated
Cons
- 7000 PSI on the gun is below the 8000 PSI listings here
- Bullets say 4 extra couplers but name 3
- No hose storage feature stated
- No safety certification stated
KRETLAW 3000 PSI Mini Grease Gun Kit
A 3000 PSI mini pistol-grip grease gun kit with 2 3 oz cartridges, a 12 in spring flex hose, 4-jaw coupler, sharp nozzle, extension adapter and gloves, at 2.03 lb with no warranty term stated. The die-cast aluminum body and anti-slip handle suit quick jobs around the property.
Who it's for: quick greasing on the mower deck and small equipment.
Who should skip it: anyone servicing a full-size tractor fleet; the 14 oz kits hold more.
Read the full review
The KRETLAW is the compact pick: a 3000 PSI mini gun in die-cast aluminum with 2 3 oz cartridges, a 12 in spring flex hose, a 4-jaw coupler, a sharp nozzle, an extension adapter and even a pair of reinforced PVC gloves. At 2.03 lb it is the easiest to carry around the property.
Pros
- 2.03 lb, the lowest weight of the four by far
- Kit includes 2 3 oz cartridges, hose, couplers, nozzle, adapter and gloves
- Die-cast aluminum body rated to 3000 PSI
- Compact size fits tight spots and toolboxes
Cons
- 3000 PSI is the lowest figure here
- 3 oz cartridges need frequent refills on big jobs
- No warranty term stated
- No safety certification stated
Other machines to compare
ZEELINE BY MILTON Grease GunCheck price on Amazon
LubriMatic LS-CGG-RED Clear Lever Grease Gun Red EndsCheck price on Amazon
PROLUBE Heavy Duty Lever Grease GunCheck price on Amazon
Side-by-side specs
| Model | Acre Score | Max PSI | Capacity | Hose | Couplers | Weight | Warranty |
|---|---|---|---|---|---|---|---|
| Thorstone Grease Gun | 9.6/10 | 7000 | 14 oz | 18 in spring | Lock + reinforced + sharp nozzle | 3.54 lb | Lifetime backing |
| UTOOL Grease Gun Kit | 9.7/10 | 8000 | 14 oz | 18 in resin flex | Basic + quick-release | 4.13 lb | 12 months |
| Seesii Grease Gun Kit | 9.7/10 | 8000 | 14 oz | 12 in flex | 3 couplers (title says 4 nozzles) | 3.4 lb | Not stated |
| KRETLAW Mini Grease Gun | 9.5/10 | 3000 | 3 oz x 2 | 12 in flex | 4-jaw + sharp nozzle | 2.03 lb | Not stated |
Specifications are manufacturer rated as listed, collected 22 October 2026.
Acreage and terrain fit
Thorstone Grease Gun
UTOOL Grease Gun Kit
Seesii Grease Gun Kit
KRETLAW Mini Grease Gun
Buying guide: best grease gun for a tractor
Pressure: match the gun to the fitting
The UTOOL and Seesii are rated 8000 PSI, the Thorstone 7000 PSI, and the KRETLAW mini 3000 PSI. Higher pressure clears stubborn, clogged fittings; the Seesii listing names clogged fittings outright. Read the figures carefully: the Thorstone’s 10,000 PSI figure describes its flexible shaft, not the gun, which is listed at 7000 PSI. For routine zerks on a mower deck, any of the four delivers; for neglected fittings on an older tractor, the 8000 PSI guns give more margin.
Pistol grip and one-hand work
All four are pistol-grip guns, so one hand pumps while the other steadies the coupler on the zerk. The UTOOL listing calls out one-hand operation with a rubber sleeve for grip; the Seesii claims an ergonomic grip that reduces hand strain on long greasing sessions; the KRETLAW lists an anti-slip texture on its handle. The Thorstone uses a T-handle pull rod with a cold-drawn steel canister. For the full service routine around these jobs, see lawn tractor maintenance.
Hose length and couplers
The UTOOL and Thorstone list 18 in hoses, resin flex and spring respectively; the Seesii and KRETLAW list 12 in hoses. A longer hose reaches zerks without dragging the gun body across the machine. On couplers, the UTOOL includes a basic coupler plus a quick-release double handle coupler with a patented push-lock-lubricate action. The Thorstone includes a lock coupler, a reinforced coupler and a sharp nozzle plus 2 rigid extension pipes. The Seesii lists a quick-release, a universal and a pointed coupler with a 90° adapter for tight spots. The KRETLAW includes a 4-jaw coupler, a sharp nozzle and an extension adapter.
Loading: cartridges, bulk and suction
Three of the four take 14 oz cartridges: the UTOOL, Thorstone and Seesii. The KRETLAW mini takes 3 oz cartridges and ships 2 of them. The Thorstone lists four loading methods: cartridge, bulk, suction and filling pump. The Seesii works with 14 oz cartridges, bulk grease or suction filling and handles greases up to NLGI #2. Match the cartridge size to the job: 14 oz suits a full service day on tractor and mower, while the mini’s 3 oz cartridges suit quick touch-ups.
Air bleed and first use
Trapped air stops a grease gun from priming. The UTOOL lists an air bleed valve that releases air pockets with a single push. The Thorstone lists an air release valve and warns to exhaust the air on first use, and not to unscrew the bottom of the gun. Bleed the gun before the first zerk, not after the third dry pump.
Grease and cartridges: what the listings state
The Seesii is the only listing here that names a grease grade: it handles greases up to NLGI #2. The other three do not name a grade, so check your tractor manual for what the fittings want. On cartridges, the UTOOL, Thorstone and Seesii take 14 oz cartridges, the standard size, while the KRETLAW mini takes 3 oz cartridges and ships 2 of them. A 14 oz cartridge lasts through a full service day on a tractor and mower; the mini’s 3 oz cartridges are for quick touch-ups, so keep spares on the shelf if the mini is your only gun.
Warranty terms, stated plainly
The UTOOL states a 12 month warranty with accessories not included. The Thorstone states lifetime product backing with fast customer service response. The Seesii and KRETLAW state no warranty term, so both score zero on warranty. A stated term is the only warranty you can count on.
Read the manual, keep children and pets out of the yard while you work, wear eye and hearing protection and sturdy footwear, and never exceed the slope rating of your machine. Refuel only with the engine off and cool. See CPSC lawn mower safety. Read our Safety Disclaimer.
Matching It to Your Property
- Rough ground and PTO work. The Thorstone lists PTO axles, universal joints and steering cylinders among its uses, with a 10,000 PSI shaft for stubborn fittings.
- Tight spots around the deck. The Seesii 90° adapter and 12 in hose, and the KRETLAW 12 in hose with extension adapter, reach zerks buried under guards.
- Storage in the barn. The UTOOL loop and lock storage and the Seesii clip-on coupler storage keep hoses tidy; all four are manual, so no charger or battery to store.
- Big properties, long service days. 14 oz capacity on three of the four means fewer refills; the KRETLAW mini suits quick touch-ups between full services.
The Acre Score explained
The Acre Score weighs five factors: performance (pressure and grease delivery), build quality (barrel, head and hose durability), value (kit completeness versus specs), safety (stated safety features), and warranty (terms and coverage). None of the four listings states a safety certification, so every gun scores zero on safety.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| UTOOL Grease Gun Kit | 9.7 | 30 | 21 | 21 | n/a | 3 |
| Seesii Grease Gun Kit | 9.7 | 30 | 22 | 22 | n/a | 0 |
| Thorstone Grease Gun | 9.6 | 29 | 21 | 21 | n/a | 0 |
| KRETLAW Mini Grease Gun | 9.5 | 26 | 20 | 20 | n/a | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score. Safety counts only for powered gear or where the listing states safety features; where it does not apply, the score is taken over the remaining 90 points.
FAQ: mowing large lots
What PSI grease gun do I need for a lawn tractor?
The listings here range from 3000 to 8000 PSI. For routine deck and steering zerks, the lower end delivers; for clogged or neglected fittings, the 8000 PSI guns give more margin. The Seesii listing specifically names clogged fittings as its use case.
How do I load a grease gun?
It depends on the gun. The Thorstone lists four methods: cartridge, bulk, suction and filling pump loading. The Seesii takes 14 oz cartridges, bulk grease or suction filling. The KRETLAW ships with 3 oz cartridges. Whichever method you use, bleed trapped air first: the UTOOL and Thorstone both list air release valves for exactly this. The Thorstone also warns to pull the T-handle back after lubricating so grease is not wasted.
What is a locking grease coupler?
A coupler that locks onto the zerk so both hands are free and grease goes into the fitting, not around it. The UTOOL lists a patented push-lock-lubricate coupler, and the Thorstone lists a locking coupler plus a reinforced coupler. The KRETLAW lists a 4-jaw coupler, which is the common locking style. If grease squeezes out around the fitting instead of going in, reseat the coupler before pumping more.
Can one grease gun serve the mower and the tractor?
Yes, and the listings expect it: the Thorstone names lawn mowers, tractors, PTO axles and universal joints in one list, and the Seesii covers farm equipment and automotive work with greases up to NLGI #2. One 14 oz pistol-grip gun covers both machines for most properties. Keep the mini as a second gun for the toolbox, not the primary, if you service more than a mower.
How often should tractor fittings be greased?
Follow the tractor’s manual for intervals; none of the listings states a service schedule. As a rule of thumb from the use cases listed, grease at every service day rather than waiting for a fitting to run dry, since a dry fitting wears fast.
More mowing guides
- Best Grease Gun (2026): 5 Picks for Mowers and Equipment
- Lawn Tractor Maintenance: Step-by-Step Care Guide
- Riding Mower Maintenance: Step-by-Step Care Guide
- Best Battery Powered Grease Gun (2026): 5 Compared
- Best Mower Blades for Lawn Tractors (2026): 5 Picks by Fit
- Best Utility Cart for Lawn Tractor (2026): 5 Carts Compared
- Flail Mower Maintenance: Step-by-Step Care Guide
- Best Oil Extractor Pump for Lawn Mower (2026): 5 Picks
