Kroil Original Penetrating Oil (Aerosol Spray-10oz Can-Case of 6), Penetrant for Rusted Bolts, Metal, Hinges, Chains, Moving Parts, Rust, Corrosion Inhibitor (AZKS102C6)
Kroil Original Penetrating Oil (Aerosol Spray-10oz Can-Case of 6), Penetrant for Rusted Bolts, Metal, Hinges, Chains, Moving Parts, Rust, Corrosion Inhibitor (AZKS102C6)
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Kroil

Kroil Original Penetrating Oil (Aerosol Spray-10oz Can-Case of 6), Penetrant for Rusted Bolts, Metal, Hinges, Chains, Moving Parts, Rust, Corrosion Inhibitor (AZKS102C6)

Key item features

  • Trusted Penetrant: Kroil Original Penetrating Oil is a trusted name among professionals for various industrial applications.
  • Deep Penetration: This penetrant effectively reaches tight spaces, threads, and crevices, making it suitable for seized bolts, chains, and hinges.
  • Repair Simplification: Kroil loosens tough rusted parts quickly, reducing the torque needed to free seized nuts and bolts.
  • Corrosion Defense: It actively removes and prevents rust, cleans carbon deposits, and displaces moisture, humidity, and saltwater.
  • American Made: Kroil brand and Kano Laboratories have been producing high-quality penetrants in the USA since 1939.
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4.678422596079642 stars out of 5, based on 12996 seller reviews(4.7)
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Customer ratings & reviews

5 out of 5 stars
stars1,080 ratings1,079 reviews
How item rating is calculated
  1. 5 stars98% (1,060)
  2. 4 stars1% (12)
  3. 3 stars0% (1)
  4. 2 stars0% (0)
  5. 1 star1% (7)

Reviews summary

Pros

  • : Has a non-objectionable scent.
  • : Provides lubrication and loosening of rusted parts.
  • : Used in various applications and projects around the house.
  • : Quickly loosens stuck metal surfaces.
  • : Allows for simple and portable application.
  • : Quickly breaks down rust on surfaces.
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Showing 1-3 of 1,079 reviews

Mar 3, 2026
WildCat1
5 out of 5 stars review

Easy to use

Fantastic stuff. Years ago I was working on replacing a brake caliper on my F250. The bolts were seized tight. A friend loaned me his can of Kroil and said to spray the bolts and go have a cup of coffee. When I came out to take them off I was stunned that I was able to now do it with just a socket and ratchet. Over the years I have used this on so many things but here two weeks ago I had to replace the washer/gasket cartridge on my bathroom sink. It's supposed to just slide out. Nope! The hard water had cemented it into place. I sprayed it with the Kroil and waited an hour and that thing now just slid out. Thank you for such a great product.

Review from kroil
Helpful?70LJMA448OKK1665468409
Jul 31, 2025
paul038
5 out of 5 stars review

best stuff i have ever used

My son give me a can of the original spray when i was restoring my 1942 ford GPW World War 2 Jeep .I was able to remove almost every singe bolt nut screw with ease. i started out using Blaster that was my main go to back then. was not having any luck. until my son give me a can of Kroil i give it a couple shots and could'nt believe it broke lose. and almost everything I used it on. this is my number 1 go to for everything. guns fishing reels you name it i use it .i just wish it was available easier and not so expensive because i use so much of it.

Review from kroil
Helpful?70LJMA448OKK1665468409
Nov 20, 2025
Zeke
5 out of 5 stars review

Works Amazing

I bought an old motorcycle that wasn't running for years. All the bolts were rusted in place on the engine,frame,etc. This bike was sitting under a tarp outside for 10 years when I found it,I, thought there was no hope getting anything apart.. With just one spray on each bolt ,they all came loose !!! Absolutely amazing product, I recommend this product to everyone I talk to about old projects.

Review from kroil
Helpful?70LJMA448OKK1665468409