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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1071 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

915 out of 921 (99%) reviewers recommend this product

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1 to 4 of 1091 Reviews .

1 – 4 of 1091 Reviews

RJ649

Hopkinsville, KY

Review 1

5 out of 5 stars.

Best penetration oil

2 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

Anonymous

Kinsman Ohio

Review 1

1 out of 5 stars.

Great Chemical, Terrible Sprayer

6 days ago

I have been using Kroil products for the last 18 years.. I swear by it. The chemical compounds are perfect. But the delivery method is horrible. I am a mechanic, my workspace is typically right in front of me. This can will either shoot 16ft away, or nothing at all, I tried using it 3 times, every time it splashed back all over me because the spray way so heavy and intense. I will spray this can into my Non-aerosol container to get my money back.

No, I do not recommend this product.

Originally posted on kroil

JT ArkBar

Hot Springs

Review 1

5 out of 5 stars.

Wow is all I can say.

17 days ago

A mechanic friend told me about it when I was having trouble with An exhaust on a Golf cart, he told me, don't look at the price just buy it. And I am so amazed, I've used it several times around the house, including on a door to a shed outside that I had soaked the hinges in diesel and this product loosened it within 5 minutes.

Yes, I recommend this product.

Originally posted on kroil

AlJaz

Amherst, Wisconsin

Review 1

5 out of 5 stars.

Excellent product to get something free!

21 days ago

An old boss of mine found your product 18 years ago and I have been a buyer ever since. The price has gone way up since then and I wish it would come back to reality! Other complaint is it is impossible to empty a can, always run out of propellant.

Yes, I recommend this product.

Originally posted on kroil

Kroil 10 oz. Penetrant Aerosol

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Reviews

Rating Snapshot

Overall Rating

Review this Product

Best penetration oil

Great Chemical, Terrible Sprayer

Wow is all I can say.

Excellent product to get something free!