Ratings may include incentivized customer reviews.
What Customers Are Saying
This penetrating oil is widely praised for its exceptional performance in loosening and freeing up rusted, stuck, or seized fasteners, bolts, and other hardware. Users consistently report successful results across a variety of applications, including firearms, vehicles, machinery, and household items. The product is also noted for its lubricating and cleaning properties, leaving surfaces shiny and clean. Many reviewers emphasize this as a must-have product, especially in areas prone to rust and corrosion.
Customer review summary generated by AI, including incentivized reviews.Awesome stuff.
Where have you been my whole life? Just completed a 4 day armorer course where I brought some firearms that had some substantial issues. Kroil literally fixed all the issues I had. Thank you for making my life easier.
From kroil
Everyone needs a can of this.
Would RecommendI have used this product for years. A Great product. I've used it many times on a new and old firearms. This is the Oil Yhat Creeps.
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The Best
Would RecommendObviously, the best penetrating oil I have ever used. As a licensed gunsmith, I have to find and use only the best products both to save time and that something actually works better than any other product. I try other penetrants but nothing has come close to Kroil in actual function.
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Great Lubricant
Would RecommendThe best at helping loosen old bolts. My 8oz. drip can is metal with a plastic cone coming out of the center of the cap. The plastic cone broke off. I am having a tough time finding a replacement cap that is the same.
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Worked its magic
Would RecommendA friend told me about Kroil and I used it on a frozen tilt lever. I let it sit overnight and what once was a frozen lever, now moved as it should
From kroil
When you just want it to work.
Would RecommendDoes a great job of making working on older equipment more pleasant. Even when the bolt and nut are needing replaced, this gets in there and lets you take them apart.
From kroil
The best creep!
Would RecommendThis is the "Big Guns" for tackling that tough stuck bolt, etc. Creeps into tight spots unlike anything else. I had a choke tube stuck in a shotgun barrel that hadn't been removed in 20+ years. Soaked in the Kroil, a little heat, a little tap... No more stuck choke! Thank you Kroil!
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It just works!
We used Kroil on the pipe supports and valves on the ancient steam power plants we were keeping alive with bubble gum and baling wire. Just a few drops, wait a minute or two ---- then get er done.
From kroil
It works!
Would RecommendOn the job, at home in the garage, even in the bedroom (squeaky door) IT WORKS!
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My experience with Kroil
Would Recommend[This review was collected as part of a promotion.] I have used this product for many years in my shop. It’s out standing for losing rusted nuts, screws, gun sights, and a excellent rust preventive for my firearms and tools.
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Great Penetrating Lubricant
Would RecommendBest penetrating lubricant I've used. Always does the job. Highly recommended.
From kroil
Great product for DIY and professionals.
Great product and cost effective. Availability is great..
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Great Stuff
Would RecommendThis stuff penetrates faster than any other product I have ever tried.it also appears to loosen screws that the other penetrating oils would never touch
From kroil
Best penetrant there is!
Would RecommendBest penetrant there is, no comparison. Me and my buddies all use Kroil. We refer to it as panther pee, lol. Works where other penetrants don't.
From kroil
it works where others failed
I picked up an old motocross motorcycle that's been sitting for over 30 years piston was stuck very badly i just soaked the piston in Kroil over night and the product worked perfectly with no damage to the bore or piston thank you great product
From kroil
i bought this a long time ago . it works great breaking lose rusted bolts
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In the shop and in the field…
Would RecommendUsed Kroil for many years. It is oftentimes a lifesaver. Especially if you can let it soak in overnight.
From kroil
Cracking it lose
Would RecommendFor the past 35 years I have used Kroil penetrant to loosen that seized or stubborn fastener in progressive stamping dies and fixtures. Now in a new chapter of my career I use Kroil penetrant to loosen hardware fasteners on foundry tooling that becomes oxidized thru the constant exposure to heat and moisture.
From kroil
One ounce a year is all I used for a decade.
A union millwright gave me a can of krill. He told me is was the absolute best. I stretched that can out for ten years because I didn’t know where to buy it. I only use it when the my back is against the wall. My can of kroon was the only supply I would hide in my workshop to prevent others from using. I’m so happy that I can now buy kroil online now. Thank you all!
From kroil
Kroil
I've been using Kan o Kroil since being in the AC service industry, and as a Mill Wright. This is the best thing that I have ever found to get crusty rusty things to let loose in the industrial world. I generally buy multiple cans at a time, so I don't ever run out. Looking forward to a purchase of the spray Kroil in the near future.
From kroil