Kroil Original Penetrant - Rust Penetrating Lubricant - Corrosion Inhibitor Oil for Chains, Hinges & Stuck Metal Parts - Home & Industrial Use - Drip Can - 8 oz - 4 Pack (AZKL081C4)

Yes, it is crazy expensive. 3-5x the price of the competition. NOT well known. No advertising. Limited availability. But wow. This stuff really works. The hype is real. The drip cap is quirky; don't break it. Used just a few drops on some very heavily rusted parts that had been sitting for 20 years. A few minutes later, they came apart easily. Count me impressed. This 8-ounce can is probably a lifetime supply for most homeowners. Cannot believe this has been around for 80+ years. If you need something that may or may not work and have a thin wallet, buy one of the many choices at the big box store. If you have expensive parts that absolutely need to come apart, pay the price. You will not be disappointed

I’ve been using Kroil Original Penetrating Oil for a while now, and I can honestly say it’s one of the best penetrating oils I’ve ever used! Whether I’m working on rusted bolts, stuck machinery parts, or even old tools that have been sitting unused for years, this product gets the job done quickly and efficiently.The penetration power of Kroil is unmatched. It seeps into the tiniest cracks and breaks down even the toughest rust and corrosion. In many cases, I’ve been able to loosen parts that I thought were impossible to get unstuck, saving me time and frustration. It works fast, and you don’t have to wait long before you see results.The application is easy, and the spray nozzle gives a controlled, fine mist that ensures the oil gets into the tightest spots without waste. I appreciate how it doesn’t leave a greasy residue after use, making cleanup a breeze.

Best Penetrating oil hands down. Works quickly no matter how rusted a bolt is. Been using this for many many years and it’s never let me down. Just a few drops usually gets the job done. A can should last the average person many years.

Been using it for 30+ years from freeing rusted parts to cleaning gun barrels. I love this stuff. This jug leaked in transit.

I wanted to give 4 stars, because this stuff is expensive. This seller is half the price of hardware store tho. This really works on penetrating rust & freeing up stuck parts. I would recommend this seller.

I understand the recommendations this oil receives, it is good. As far as the price and this type of can for automotive work, that's too hard to promote. The 8oz can was the least expensive (per oz.) but if the 3oz aerosol was available (at five dollars less) I would have bought it instead. If you need one penetrant and only use it in an emergency survival out in the wilderness, it would be the one to have.

Oh I heard of this many years ago just started using it and wow it works like nothing I've ever tried before. It cleans carbon and creeps into hard to get spots like magic. Funny smell but works amazing

Works excellently for rusted and extremely tight nuts and bolts!

It worked great on the frozen element on the hot water heater. I put some on a day or two before the impact bit arrived. It wouldn't budge before, tightened it to crack it loose, then it spun off like magic. Really penetrates through anything. Be careful getting it on your hands or face, it has a really strong smell and may cause skin irritation...i was careless, i could smell it for two days!

Price is little high comparing with same in market , Smell is very strong

This is simply the best penetrating oil I have come across. Simply magic stuff

Magical stuff. Easily kills of rust and helps removal of rusty bolts and nuts and screws.

A little bit (a few drops) goes a long way ! Give it a few minutes to seep in . 5 to 10 minutes should do for best outcome.