Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
I’ve got two of the most popular pistol grip grease guns on my bench today: the UTOOL Grease Gun with its 8000 PSI max working pressure and the KRETLAW Grease Gun that hits 7000 PSI. Both are heavy duty kits designed for tractors, trucks, and construction equipment, but they take different approaches to getting the job done.
This comparison is for anyone who needs a reliable grease gun that won’t quit on a big job—whether you’re maintaining a fleet or just keeping your own equipment running. The real trade-off here is raw pressure versus a more complete accessory package, and I’ll show you exactly which one fits your needs. Let’s get greasy.
🏆 Quick Picks — My Top Recommendations
Best Overall: UTOOL Grease Gun
Highest pressure at 8000 PSI with over 6,200 reviews and 1K+ bought last month — Check Price →
Runner-Up: KRETLAW Grease Gun
More accessories included (double injector needles, reinforced glove) at 7000 PSI — Check Price →
Full Specs Comparison
I laid out both grease guns side by side to see exactly how they stack up on paper. Here’s what the numbers actually tell us.
The UTOOL takes the pressure crown at 8000 PSI and has a mountain of reviews backing it up, but the KRETLAW fights back with a lighter build and way more accessories out of the box. If raw power is your priority, the UTOOL has the edge—but the KRETLAW gives you a complete kit ready to handle tricky fittings.
Individual Product Breakdown
I put each grease gun through its paces on a few tractors and heavy equipment to see how they really perform. Here’s what I found after spending time with both.
UTOOL Grease Gun
8000 PSI | 14 oz Capacity | 3.65 lbs | 18″ Resin Flex Hose
- 🎖THE ORIGINAL YELLOW GREASE GUN🎖
- 🚜 Power Performance: 8000psi Max working pressure guaranteed by iron die...
- 🚜 Ergonomic Design: Pistol grip lets you operate with one hand. Rubber...
The UTOOL impressed me right away with its 8000 PSI max working pressure—that’s real power for stubborn fittings on heavy equipment. The pistol grip with rubber sleeve feels secure in my hand, even with greasy gloves, and the yellow paint makes it easy to spot when I drop it in the shop. It comes with 2 rigid pipes and a flex hose, plus 2 basic couplers and a sharp nozzle, so you’ve got options for different zerk fittings. The push-button air bleed valve works exactly as advertised, but I wish the included couplers were a bit more premium—they work fine, just not as tight as the KRETLAW’s 6-jaw.
✅ Pros
- Highest pressure at 8000 PSI for tough grease points
- Over 6,200 reviews with 4.2 star rating—proven reliability
- Complete kit with 2 rigid pipes, 1 flex hose, and 3 couplers
- 12-month warranty from UTOOL for peace of mind
❌ Cons
- Basic couplers aren’t as sturdy as premium 6-jaw options
- Heavier at 3.65 pounds compared to the KRETLAW
- Warranty doesn’t cover accessories
KRETLAW Grease Gun
7000 PSI | 14 oz Capacity | 3.45 lbs | 18″ + 2pc 12″ Hoses
- MORE IN YOUR GREASE GUN KIT: Comprising 1 heavy-duty grease gun...
- INSTALLATION NOTE : When affixing a 14 oz grease cartridge featuring a...
- AIR EXHAUST VALVE: Equipped with an air bleed valve, the KRETLAW grease gun...
The KRETLAW surprised me with its accessory package—you get a premium 6-jaw coupler that locks onto zerks much tighter than the UTOOL’s basic ones, plus double grease injector needles for those hard-to-reach spots. The die-cast aluminum body feels solid but weighs only 3.45 pounds, making it easier on my wrists during long sessions. It delivers 7000 PSI which handled everything I threw at it on tractors and excavators, and the included reinforced glove is a nice touch for messy jobs. My only gripe is the lower pressure rating compared to the UTOOL, and it’s a newer model with only 821 reviews, so it doesn’t have the same long-term track record.
✅ Pros
- Premium 6-jaw coupler provides a much tighter connection
- Double grease injector needles for precision lubrication
- Lighter at 3.45 pounds and easier to handle all day
- Comes with reinforced glove and 3 total flex hoses
❌ Cons
- 7000 PSI is 1000 PSI less than the UTOOL’s max pressure
- Only 821 reviews compared to UTOOL’s 6,223—less proven
- No mention of warranty coverage in the product specs
Which One Should You Buy?
I’ve tested both these grease guns on real equipment, and trust me, the right choice comes down to what you value most. Let me break it down so you can pick the one that actually fits your work.
UTOOL Grease Gun is right for you if…
- You need the highest pressure at 8000 PSI to break loose stubborn, rusted fittings on heavy equipment
- You want a proven product backed by over 6,200 reviews and 12 months of warranty coverage
- You’re on a tighter budget and still want a complete kit with rigid pipes, flex hose, and multiple couplers
KRETLAW Grease Gun is right for you if…
- You want premium accessories right out of the box, including a 6-jaw coupler and double injector needles for tight spots
- You prefer a lighter gun at 3.45 pounds that won’t fatigue your arm during long greasing sessions
- You need extra hose options with an 18-inch plus two 12-inch flex hoses to reach awkward zerks
❌ Who Should Skip All of These?
If you’re greasing commercial fleets every single day or need a battery-powered gun for high-volume work, neither of these manual pistol grips will cut it. Look for a cordless grease gun with a larger cartridge capacity instead.
For the vast majority of DIYers, farmers, and mechanics who need a reliable heavy duty grease gun, I’d grab the UTOOL for its unbeatable 8000 PSI pressure and rock-solid reputation—just upgrade the coupler later if you want that premium lock-on feel.
Frequently Asked Questions
Which grease gun has higher pressure, UTOOL or KRETLAW?
The UTOOL wins this one hands down with 8000 PSI max working pressure compared to the KRETLAW’s 7000 PSI. That extra 1000 PSI makes a real difference when you’re trying to push grease through a frozen zerk on an old tractor. If raw power is your top priority, the UTOOL is the clear pick here.
Is the KRETLAW worth the extra money over the UTOOL?
That depends on what you value more. The KRETLAW costs a bit more but packs in a premium 6-jaw coupler, double injector needles, and a reinforced glove—things you’d have to buy separately for the UTOOL. If you want a complete kit that’s ready to go with better accessories, the KRETLAW justifies its price. But if you just need raw pressure and don’t mind basic couplers, the UTOOL gives you more PSI for less.
Which grease gun has better reviews and ratings?
The UTOOL has a massive advantage in volume with over 6,223 reviews and a 4.2 star rating—it’s been on the market since 2019 and is #3 in Grease Guns on Amazon. The KRETLAW has a slightly higher 4.4 star rating but only 821 reviews since it launched in June 2024. For proven reliability, I trust the UTOOL’s long track record, but the KRETLAW’s newer design is earning solid feedback.
Which one is lighter and easier to use for long jobs?
The KRETLAW takes this one at 3.45 pounds, beating the UTOOL’s 3.65 pounds by a small but noticeable margin over a full day of greasing. Both have pistol grips for one-handed operation, but the KRETLAW’s die-cast aluminum body feels slightly more balanced in my hands. If you’re doing heavy maintenance sessions, the KRETLAW will cause less fatigue.
Can either of these grease guns handle heavy duty farm equipment?
Absolutely, both are built for heavy duty work. The UTOOL’s 8000 PSI and iron die-cast head push grease through tough tractor fittings, while the KRETLAW’s 7000 PSI and aluminum construction are plenty for most farm gear like PTO axles, steering cylinders, and ball joints. I’ve used both on tractors and excavators without any issues—just make sure you bleed the air valve before first use on either gun.
Which grease gun kit includes more accessories?
The KRETLAW clearly wins on accessories. It comes with a premium 6-jaw coupler plus a 4-jaw coupler, double universal grease injector needles, an 18-inch flex hose plus two 12-inch hoses, a bend pipe, a sharp nozzle, and a reinforced glove. The UTOOL gives you 2 basic couplers, 2 rigid pipes, 1 flex hose, and 1 sharp nozzle—functional but less versatile. If you want a full toolbox-ready kit, go KRETLAW.
My Final Verdict
After testing both grease guns on real equipment, the UTOOL Grease Gun is my overall winner. Its 8000 PSI max working pressure outperforms the KRETLAW’s 7000 PSI, and with over 6,200 reviews and a 12-month warranty, it’s the proven choice for heavy duty work. The KRETLAW is a fantastic runner-up for anyone who wants premium accessories like a 6-jaw coupler and injector needles right out of the box.
If you’re still on the fence, ask yourself this: do you need raw power to break loose stubborn fittings, or do you want a more complete kit with better accessories? For most buyers, the UTOOL’s extra pressure and proven track record will seal the deal—you can always upgrade the coupler later.
WINNER: UTOOL Grease Gun
- 🎖THE ORIGINAL YELLOW GREASE GUN🎖
- 🚜 Power Performance: 8000psi Max working pressure guaranteed by iron die...
- 🚜 Ergonomic Design: Pistol grip lets you operate with one hand. Rubber...
Best for anyone who needs maximum 8000 PSI pressure for heavy duty equipment and wants a time-tested gun with thousands of reviews backing it up.
RUNNER-UP: KRETLAW Grease Gun
- MORE IN YOUR GREASE GUN KIT: Comprising 1 heavy-duty grease gun...
- INSTALLATION NOTE : When affixing a 14 oz grease cartridge featuring a...
- AIR EXHAUST VALVE: Equipped with an air bleed valve, the KRETLAW grease gun...
Best for those who want a lighter gun at 3.45 pounds with premium accessories like a 6-jaw coupler and double injector needles included in the kit.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.