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  • 24/7 support when you need it.
  • Quick, easy, and frustration-free claims.
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3-Year Protection $23.99
4-Year Protection $32.99
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Asurion Complete Protect: One plan covers all eligible past and future purchases (Renews Monthly Until Cancelled) $16.99/month

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  • Coverage for accidental damage including drops, spills, and broken parts, as well as breakdowns (plans vary)
  • 24/7 support when you need it.
  • Quick, easy, and frustration-free claims.
Cover this product:
$134.00
FREE delivery Friday, May 10. Order within 11 hrs 11 mins. Details
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$$134.00 () Includes selected options. Includes initial monthly payment and selected options. Details
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Hearthshire
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Non-returnable due to hazmat safety reasons
Non-returnable due to hazmat safety reasons
This item is non-returnable due to its composition that makes it regulated for transportation, but if the item arrives damaged or defective, you may request a refund or replacement.
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Returns
Non-returnable due to hazmat safety reasons
This item is non-returnable due to its composition that makes it regulated for transportation, but if the item arrives damaged or defective, you may request a refund or replacement.
Read full return policy
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3 Year Home Improvement Protection Plan

from Asurion, LLC
(1025)
  • No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
  • Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
  • Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. We will send you an e-gift card for the purchase price of your covered product. In some instances, we will replace or repair it.
  • Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
  • Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
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4 Year Home Improvement Protection Plan

from Asurion, LLC
(4338)
  • No Additional Cost: You pay nothing for repairs – parts, labor, and shipping included.
  • Coverage: Plan starts on the date of purchase. Drops, spills and cracked screens due to normal use covered for portable products and power surges covered from day one. Malfunctions covered after the manufacturer's warranty.
  • Easy Claims Process: File a claim anytime online or by phone. Most claims approved within minutes. We will send you an e-gift card for the purchase price of your covered product. In some instances, we will replace or repair it.
  • Product Eligibility: Plan must be purchased with a product or within 30 days of the product purchase. Pre-existing conditions are not covered.
  • Terms & Details: More information about this protection plan is available within the “Product guides and documents” section. Simply click “User Guide” for more info. Terms & Conditions will be available in Your Orders on Amazon. Asurion will also email your plan confirmation with Terms & Conditions to the address associated with your Amazon account within 24 hours of purchase.
Learn more

Asurion Complete Protect: One plan covers all eligible past and future purchases on Amazon

from Asurion, LLC
(688)
  • Buy a lot of stuff on Amazon? Tons of items eligible for coverage, from the latest tech like laptops, game consoles, and TVs, to major appliances, sporting goods, tools, toys, mattresses, personal care, furniture, and more.
  • Accidents happen. That’s why for your portable products we cover accidental damage from handling such as drops, spills and cracked screens. We also cover electrical and mechanical malfunctions, power surges, and wear and tear.
  • Past and future purchases covered. 30 days after you are enrolled, all eligible past purchases (up to 1 year prior to enrollment) and future eligible purchases made on Amazon will be covered by your plan as long as you are enrolled.
  • Fast, easy claims. Frustration-free claims, with most filed in minutes. We will fix it, replace it, or reimburse you with an Amazon e-gift card for the purchase price of your product (excluding tax). File at Asurion.com/amazon.
  • No hidden fees. For just $16.99 a month + tax you’re covered for up to $5,000 in claims per 12-month period. *THIS PROGRAM IS MONTH-TO-MONTH AND WILL CONTINUE UNTIL CANCELED* Coverage for all products ends 30 days after the plan is canceled. Cancel any time.
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Kroil Original Penetrating Oil, 1 gallon liquid (KanoLab Kroil)

4.8 4.8 out of 5 stars 244 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Power Tool Lubricants by KROIL
$134.00
Available at a lower price from other sellers that may not offer free Prime shipping.
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Purchase options and add-ons

  • UNRIVALED STRENGTH: Attacks corrosion to free bolts, fasteners and other mechanical components
  • UNIQUE FORMULA: Removes rust and carbon deposits without attacking metal, leaving long-lasting protection
  • QUICK ACTING: Penetrates faster and deeper than similar products
  • FLEXIBLE USAGE: Use on any corroded threads or tight parts
  • UNSEIZE THE DAY: Makes the toughest maintenance jobs easier, faster, safer, and simpler to execute
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Frequently bought together

Kroil Original Penetrating Oil, 1 gallon liquid (KanoLab Kroil)
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Kroil Original Penetrating Oil (Drip-8oz Can-Single) | Penetrant for Rusted Bolts, Metal, Hinges, Chains, Moving Parts | Rust
$20.79
Get it as soon as Friday, May 17
In Stock
Sold by Woodside Distributors and ships from Amazon Fulfillment.
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Product Description

KROIL ORIGINAL PENETRANT. BEST PENETRATING OIL.

Kroil's unique, proprietary molecular architecture creates an affinity to metal that guarantees swift penetration, while maintaining a molecular structure capable of breaking bonds at the first molecular level. This unique molecular architecture was chemically engineered in the laboratory based on research which defined the interdisciplinary physical, electrical, mechanical and chemical properties which cause frozen metal parts. This research enabled Kroil to be chemically engineered to loosen frozen metal parts in every instance regardless of the cause.

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NOTHING WORKS LIKE KROIL

Kroil penetrates into ultra-tight spaces, breaking down rust and corrosion to loosen seized metal parts and linkages.

REAL SCIENCE

Kroil’s proprietary formulation ensures swift penetration of metal connections, and is capable of breaking corrosive bonds at the first molecular level.

FAST. DEPENDABLE. DONE.

Use Kroil on nuts, bolts, screws, pulleys, shafts, bearings, bushings, guns, pipe threads, spindles, valve guides, or on any corroded threads or tight parts.

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SILICONE LUBRICATION

Sili Kroil works quickly to loosen and lubricate rusted or corroded metal parts and joints. (Found exclusively in Silikroil products)

KEEP TOOLS RUST-FREE

Kroil works to keep tools in great condition by fighting corrosion due to heat, salt water, chemical action, or weathering.

THE GO-TO PENETRANT

Kroil dissolves and removes rust, carbon deposits, gum, dried grease and oil, without attacking metal.

kroil 8oz 1 gal Aerokroil 10oz Aerokroil 13oz Aerokroil 16.5 oz Sili 16.5
Kroil Original Penetrating Oil, 8 oz. Liquid (KanoLabs Kroil) Kroil Original Penetrating Oil, 1 Gallon Liquid (KanoLabs Kroil) Kroil Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL) Kroil Aerokroil Penetrating Oil, 13 oz. aerosol (AEROKROIL) Kroil Aerokroil Penetrating Oil, 16.5 oz. aerosol (AEROKROIL) Kroil Silikroil Penetrating Oil King Size, 16.5 oz aerosol (SILIKROIL)
Customer Reviews
4.8 out of 5 stars
6,068
4.8 out of 5 stars
244
4.8 out of 5 stars
3,079
4.8 out of 5 stars
1,216
4.8 out of 5 stars
3,096
4.8 out of 5 stars
1,321
Price $19.23 $134.00 $25.99 $34.92 $33.00 $33.99
Size 8 oz. 1 gal. 10 oz. 13 oz. 16.5 oz 16.5 oz.
Aerosol ✓ ✓ ✓ ✓
Brand Kroil Kroil Aerokroil Aerokroil Aerokroil Silikroil
Silicone Lubrication ✓

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Kroil Original Penetrating Oil, 1 gallon liquid (KanoLab Kroil)

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Customer reviews

4.8 out of 5 stars
4.8 out of 5
244 global ratings

Customers say

Customers like the quality, performance, and penetration of the tools. For example, they mention it's the best penetrating oil they have ever used, works really well, and doesn't harm blued finishes. That said, opinions are mixed on the value.

AI-generated from the text of customer reviews

11 customers mention11 positive0 negative

Customers are satisfied with the quality of the tools. Some mention it's the best product available, and the Kroil is amazing.

"Best stuff made. But sure is expensive" Read more

"One of the best products I have ever used" Read more

"Best prouduct available! My only con is that there could be a better way to transfer to smaller container without spilling" Read more

"The product, Kroil is amazing. The gallon can weighs about 5 lbs, but Amazon packed it like it was a small lightweight item...." Read more

7 customers mention7 positive0 negative

Customers are satisfied with the performance of the penetrating oil. They mention that it works well and is one of the best penetrants they have used. Some say that it is top notch and works on rusty nuts.

"Works great!!" Read more

"This oil is top notch. It really works on rusty nuts. And old pliers and adjustable wrench's." Read more

"Does a good job" Read more

"Works fairly good,but needs to spin the bolts off for that price!!!" Read more

6 customers mention6 positive0 negative

Customers are satisfied with the oil penetration of the tool. They mention that it is the best penetrating oil they have ever used.

"This oil is top notch. It really works on rusty nuts. And old pliers and adjustable wrench's." Read more

"The oil is great product, however please pack it better because it's leaking out to the bag. Thanks." Read more

"Best penetrating oil made..." Read more

"Best penetrating oil I have ever used..." Read more

6 customers mention3 positive3 negative

Customers are mixed about the value of the tools. Some mention that it's the best price they found and worth every penny, while others say it' a little pricey but it simply works.

"Can not go wrong with Kroil, and this was the best price I found...." Read more

"Best stuff made. But sure is expensive" Read more

"Great product and buying in bulk like this is a huge cost savings. I use a spray bottle and syringes to apply...." Read more

"...Best penetrating oil I have found. A little pricey but it simply works." Read more

Not easy to use without the right dispenser.
5 Stars
Not easy to use without the right dispenser.
This stuff is great! Want to make it better? I use these 1oz dropper/squirt bottles. I have carried this bottle for almost 2 years without fail. I am also VERY rough on things. I carry it around 8 hours a day on my work vest. In a crawl space, on a roof, in a tree, Kroil stay on this Handyman at all times.
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Top reviews from the United States

Brandon Nelson
5.0 out of 5 stars Great stuff!
Reviewed in the United States on September 20, 2023
Verified Purchase
Works great!!
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Randy K.
5.0 out of 5 stars This really works!!!
Reviewed in the United States on January 14, 2024
Verified Purchase
This oil is top notch. It really works on rusty nuts. And old pliers and adjustable wrench's.
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gabor s korthy
5.0 out of 5 stars Best penetrating oil made
Reviewed in the United States on January 8, 2024
Verified Purchase
I restore antique motorcycles and have used Kroil exclusively for decades. Spray on the frozen part liberally and allow to sit several days if possible. I have never broken a bolt using Kroil. I also use it as a cutting fluid when turning items on the lathe.
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nadiaz
5.0 out of 5 stars Helps Loosen Nuts and Bolts
Reviewed in the United States on January 16, 2024
Verified Purchase
I am amazed. It eliminated problem with loosening nuts and bolts of all sizes, even rusted ones. However, the most valuable outcome is that the threads are saved in the process and can be conditioned if needed. I have not damaged a single thread since I started using Kroil. Five stars!
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larry claypool
5.0 out of 5 stars Best penetrant out there
Reviewed in the United States on December 31, 2023
Verified Purchase
Kroil user for decades. this was the price per oz. out there !
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John P Hollan
4.0 out of 5 stars Works
Reviewed in the United States on July 28, 2023
Verified Purchase
Does a good job
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Amazon Customer
5.0 out of 5 stars Works
Reviewed in the United States on May 4, 2023
Verified Purchase
Best stuff made. But sure is expensive
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ROGER KELLOGG
5.0 out of 5 stars that it really works
Reviewed in the United States on November 2, 2023
Verified Purchase
it does not take much
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