Ratings may include incentivized customer reviews.
What Customers Are Saying
This penetrating oil is widely praised for its exceptional performance in loosening and freeing up rusted, stuck, or seized fasteners, bolts, and other hardware. Users consistently report successful results across a variety of applications, including firearms, vehicles, machinery, and household items. The product is also noted for its lubricating and cleaning properties, leaving surfaces shiny and clean. Many reviewers emphasize this as a must-have product, especially in areas prone to rust and corrosion.
Customer review summary generated by AI, including incentivized reviews.The most amasing penetrator
Would RecommendI've been using Kroil oil since I started in the coal mine 45 years ago and it was the first time I ever heard of it.I've seen it do some some stuff that is hard to believe, from loosening water clamp bolts that were buried under two feet of dirt and water to bolts on auto exhaust systems that were so rusted that they should have never come loose. This is a product that I will never stop using.
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Don’t buy anything else
Would Recommend[This review was collected as part of a promotion.] Hands down the best penetrating oil money can buy
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Great thread problem cure !
Would RecommendI have used kroil all through out my 40 year career as a Pipefitter . Have not found any product that freed older threads, nuts. Fasteners . Keep a couple cans on my workbench still .
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I wish I found you guys sooner
Would RecommendI can't really write the right review with out Mentioning the competitors because it goes along with my story about why you guys are so good?So you just like took the wind out of my sails. but I love your product and I actually Promote your product everywhere for free. And I've never gotten a kick back or anything.
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A timeless marvel
Would RecommendUpon the recommendation of my great uncle, I have been using this to restore the notes of rusted rifles, as well as a number of other things. It works better than anything else I have ever used. This product has been kicking butt for decades.
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My wife uses Kroil for perfume!
Kroil is always my 'go-to' for all garage projects! My wife uses it as perfume too!
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Best of the best
Kroll is the best. I used it almost daily in the shop.
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Amazing penetration
Would RecommendRust worst nightmare, great product. Can't wait to work on more things to try this product more. Cheers
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Unlimited uses
Have been using this for years on my guns and just keep finding new uses amazing product
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A must in my toolbox
Would RecommendI work in facilities and use classic Kroil all the time. From rusted bolts to stuck locks!
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Best stuff in the world.
Would RecommendI night use this all the time on the job as a pipefitter. This stuff stays stocked in my work truck and gets the job done.
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Very compact
Easy to use and very affordable! I would recommend this product to anyone!
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Great stuff
Would RecommendWorks great for a variety of uses! This product rocks!
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It just works
Would RecommendThis has helped in situations that I didn't think I had a chance of freeing up bolts and nuts.
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Works as promised
Would RecommendI bought this for my mechanic shop and it's a dynamic time saver when it comes to old parts
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My favorite chemical
Would Not RecommendBeen using this for project 30 years, on everything. Recently discovered it works very well for cleaning firearms too! Very excited about that. I also use silikroil extensively, especially on dirt bikes and other toys… love it, and smells great too!
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The Best
I have used Kroil for decades. It is the finest for conditions in the wet Northwest.
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Best there is!
Been a Diesel Mechanic for 27 years. It’s the only brand that I use.
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Overnight Success
Would RecommendTried to remove axel from wheel bearing using 20 ton press - used Kroil overnight and was able to remove parts the next day with just a tap of a hammer
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Great Stuff
Would RecommendI just bought another can of this stuff, man I love it, it is always there to get me out of a pinch!!
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