

Kroil Original Penetrating Oil (Liquid-1 Gallon Can-Single), Penetrant for Rusted Bolts, Metal, Hinges, Chains, Moving Parts, Rust, Corrosion Inhibitor (KL011)
Key item features
- Trusted Penetrant: Kroil Original Penetrating Oil from Kano Laboratories is a trusted penetrating oil for various industries.
- Deep Penetration: This oil penetrates small openings, threads, and crevices, effectively reaching seized bolts, chains, and hinges.
- Repair Simplifier: Kroil loosens tough rusted parts quickly, reducing the torque needed to free seized nuts and bolts.
- Corrosion Attacker: It removes and prevents rust, cleans carbon deposits, and penetrates rusty components.
- Moisture Displacer: Kroil displaces moisture, humidity, and saltwater, making it suitable for wet environments.
- American Made: Produced in the USA by Kano Laboratories, founded in 1939.
Specs
- Machine & tool lubricant typePenetrating Lubricant
- Container typeBox
- Volume capacity1 gal
- Cleanser formLiquids
- FeaturesCorrosion Protection
- Size1 Pack Single
- Free shipping
Free 30-day returns
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About this item
Product details
- Trusted Name in The Penetrating Oils – Kroil Original Penetrating Oil from Kano Laboratories has a strong reputation among professionals as the trusted penetrating oil for any industry
- Penetrates Faster and Deeper – Tight spaces are no problem for Kroil. It penetrates small openings, threads and crevices. So, whether you’re dealing with seized bolts, dirt bike motorcycle chains, rusty old door hinges, or stubborn garage door rollers, Kroil isn’t afraid to get in tight spots and get dirty
- Simplifies Repairs, Magnifies Muscle – When tackling the toughest nuts and bolts, any additional leverage helps. Kroil loosens tough rusted parts fast, and requires less torque to loosen seized nuts and bolts. Now that’s leverage!
- Attacks Corrosion, Removes Rust and Carbon Deposits – Corrosion meets its match, as Kroil removes and prevents rust, cleans carbon deposits and penetrates rusty parts. Kroil also displaces moisture, humidity and salt water, which makes it perfect for wet, humid environments
- Made In The USA With Global Packaging – Kroil brand and Kano Laboratories were founded in Chicago, Illinois, USA in 1939 by Thomas J. O’Kane. Now located in Nashville, Tennessee, USA, we take pride in employing American workers to produce the highest quality penetrants right here in the USA
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Machine & tool lubricant type
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Showing 1-3 of 54 reviews
How I learned about Kroil Original Penetrant
Back in the 1960's when I was a kid, my Dad would hire me to shovel metal chips out of his cutting machines. Dad had a small machine shop that employed two and sometimes three people. I would shovel chips out of each machine and then oil the machines with different lubricants. That was my job for a couple of days after school. I learned a lot about maintenance of machine tools. One day, I bought an old three speed bicycle so I could get back and forth from school to job. It was old, rusted, and needed some TLC. I needed to change the tires and tubes so I did, after I got done with my job at the shop, but could not get the wheel off the bicycle frame because of rust on the axle bolts and nuts. My Dad was an avid Kroil user and taught me how to use this penetrant. My Dad always bought the gallon cans and filled an old Eagle metal pump oiler that had Kroil printed on the can. He told me to squirt a little of this oiled on the threads and wait a couple of minutes so that the oil could creep into those thread and and break-up the corrosion between the nuts and threads. WOW, it worked! All four axle nuts came off so easy. When I took over the family business in 1982, I made sure we always had the Original Kroil in stock. But then I discovered aerosol SiliKroil and that became a standard in the shop too. It works just as well as the original Kroil but has so many more applications. We machine a lot of aluminum and when we don't use a coolant, we use SiliKroil as a cutting oil on the dry lathe. It works so much better than Kerosene and smells a whole lot better. All the other machines use a water base coolant. If I'm hand drilling a piece of metal, I always lube it up with SiliKroil because it cuts down on the drill wear and the drill won't grab as you drill through the metal piece. We are still using the same old push lawn mower Dad purchased back in the early 1960's to mow the shop lawn. But I noticed one day it was getting hard to pull and excessive black smoke was coming out of the little muffler exhaust. I thought there goes the piston rings. I was placing a shop order through my supplier and noticed Kreen was a gas treatment, so I ordered a gallon. Mixed it in with the gasoline and over a couple of weeks I noticed that it was easier to pull start and very little black exhaust coming out of the muffler. Again, I was impressed! You got to love those Briggs and Stratton engines! I've been an avid fan of Kroil products since 1965 and will continue to use Kroil products as long as I am still the shop owner. And by the way, I'm still using that Eagle pump oiler with the original Kroil penetrant in it!
Greatest penetrant ever!
I am a Union Millwright and we work on 90% of the gas and steam turbines across the United States that is responsible for creating electricity across the U.S. Some of these components are exposed to 1200° steam for years at a time. Our contractors know what it takes to overhaul this equipment and that's why we use gallons of Kroil!
There is nothing like it!
We use KROIL in my trade, I am a union Millwright. We build and rebuild machinery in factories all over the country. One of my jobs was rebuilding steam turbine generators for Com-Ed in Chicago, steam turbines that had been running for 70 years. Needless to say we had plenty of stuck nuts and bolts, some the size of coffee cans, but sprayed them with Kroil and give them a little time for it to creep into the threads and we were able to loosen and remove them. The stuff worked so well I started keeping a can in my garage to use when working on my cars and motorcycles.













