The Original Penetrant since 1939, AEROKROIL, KROIL aerosol is an industrial-strength penetrating oil formulated to quickly penetrate deep into small crevices. KROIL attacks rust and corrosion to help loosen frozen or seized metal fasteners such as nuts, bolts, screws, studs, hinges, tools, pulleys, chains or valves. Safe on all metals, it is ideal for stuck parts on cars, trucks, ATVs, fleet, farm and agriculture engines and equipment.

Corrosion Meets its Match

FAST-ACTING: penetrates small openings, threads and crevices
PRO GRADE: trusted by the professionals
SIMPLIFIES REPAIRS, MAGNIFIES MUSCLE: gives you all the leverage you need for those stubborn jobs
APPLICATIONS: Use on nuts, bolts, studs, screws, pulleys, shafts, valves, chains, tools, bearings, and any corroded threads or seized metal fasteners

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Reviews

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1074 reviews with 5 stars.

12 reviews with 4 stars.

1 review with 3 stars.

0 reviews with 2 stars.

7 reviews with 1 star.

Overall Rating

5.0

918 out of 924 (99%) reviewers recommend this product

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Summary of Reviews

AI-generated from customer reviews, which may include incentivized reviews.

The product is highly effective at loosening and freeing up rusted, seized, or stuck parts and fasteners, outperforming other leading penetrating oils. A small amount goes a long way, making it a cost...

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1 to 4 of 1094 Reviews .

1 – 4 of 1094 Reviews

Hugo

Grover NC

Review 1

5 out of 5 stars.

Best Penetrant Ever

3 days ago

I have been using Kroil for years, not the cheapest but the best by far!!!

Yes, I recommend this product.

Originally posted on kroil

Anonymous

Bixby Oklahoma

Review 1

5 out of 5 stars.

It works when the rest wont

5 days ago

I have used Kriol here at Ron Shanks Racing Enterprises Inc. for years we do alot of older engine work here and have rusted frooze up bolts alot and Kroil has always worked well for us and has never let us down if you havent used it you should be using it

Yes, I recommend this product.

Originally posted on kroil

Jdunk

Big Rapids mi

Review 1

5 out of 5 stars.

Works every time I use it

24 days ago

Be using for several years now it was recommended by a friend and now I tell everyone about how well it works

Yes, I recommend this product.

Originally posted on kroil

RJ649

Hopkinsville, KY

Review 1

5 out of 5 stars.

Best penetration oil

27 days ago

Bought Kroil penetrant after multiple others failed. Used Kroil to remove 7 year rusted gooseneck ball hitch from truck bed. Using Kroil, floor jack, and chain after 2-3 hours of soaking and pulling, it broke free. Definitely recommend and will use on all future projects.

Yes, I recommend this product.

Originally posted on kroil

Kroil 10 oz. Penetrant Aerosol

Kroil 10 oz. Penetrant Aerosol

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Best Penetrant Ever

It works when the rest wont

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Best penetration oil

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