Your Trusty Guide to the Best Penetrating Oil

Kano Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL)

Penetrating oils are a type of substance that’s precisely capable of removing rusty materials. However, it’s important to understand that this has other benefits as well. At the same time, penetrating oils have limitations. That is why you should handle it carefully.

Today, we’ll talk about the basics that you need to know before buying the best penetrating oil. Who knows? That might not be the oil that you should use for your work. Stay tuned to find out more about the products as well!

Our Picks for the Best Penetrating Oil


Understanding the penetrating oil

Penetrating oils work similar to other kinds of oils. When judging its appearance, it’s no different than looking at engine oil or other lubricants. However, it’s important that we remember that this oil has certain characteristics that make it unique.

For starters, the primary purpose of penetrating oils is to remove stuck metals. The standard feature of these metals is that all are usually rusted. The rust accumulating in the metal makes it not only brittle but hard to remove.

The reason for this is that the surface of the metal is already damaged. The once smooth texture that provides easy removal is now tainted. That is where this kind of oil comes into play.

It works by basically seeping in the narrow spaces of the metal and the object it’s stuck in. It can be either wood, metal, plastic, or any surface. Let’s use my experience, for example; I first used a penetrating oil to fix a jammed lock.

The lock on my condo’s main door got jammed because a metal part inside was stuck. Thus, I had to remove the lock assembly. However, the main casing of the lock was stuck too due to rust.

Hence, I used a well-known penetrating oil and applied it around the edges of the casing. That allowed it to dislodge from the wood, enabling me to remove the assembly in one go.

The science behind penetrating oils

Penetrating oils have the main characteristic, and that’s low-viscosity. It’s no surprise because the lower the viscosity, the better it can seep inside. Just imagine if it has high viscosity, it’ll probably do more harm than good to the rusty metal.

While you might think that other lubricants with low viscosity can be an alternative, it actually can’t. That is where the second feature comes into play, and that’s the oil film.

After the smooth penetrating oil seeps in the narrow gaps of the material, it then leaves oil film residue. That is what other lubricants struggle in doing. While some oils are safe for most surfaces, rust is a particular problem.

The oil film that is left inside removes rust and replaces it with the smooth lubricant. It eats the rusty surface away, causing the material to be more seamless.

Other Uses of Penetrating Oils

While penetrating oils is best known as an emergency lubricant, it also has a few uses. Thus, it makes this oil pretty versatile, showing that it’s a good investment at the right price.

Anti-corrosion and rust

Penetrating oils do not have to be used only for emergency purposes. Instead, you can use this oil as for daily or weekly maintenance of your mechanical object. You can apply this regularly to vehicles, metal joints, and other machinery.

The reason for this is because of its rust-eating capability. Applying this for maintenance is just for prevention. Instead of removing rusty parts with it, why not prevent rust from accumulating in the first place? That would be much easier and would also extend the life of your machine.

Cleaning oil

The first unconventional use of this oil is universally acceptable. However, it’s important to note that this and you should apply the next one with caution. While penetrating oils are good cleaners, it should be moderate.

That is best used to clean metal and mechanical parts. Again, we trace this back to its anti-corrosive ability. It means that rust is not the only thing that it can prevent. It can also stop the buildup of harmful particles that you may find in dirt and grease.

Multi-purpose

Furthermore, there have been many instances where a penetrating oil is used to remove gum and adhesives. That’s because the components of a chewing gum are also weak enough for it to be eaten by the oil.

The same goes for materials with adhesives on the surface. If you want that sticky residue off, this one’s a good solution! Still, be wary when using it as an all-purpose lubricant or cleaner. These oils have high volatility, which can damage certain surfaces and materials.


Top 5 Best Penetrating Oil Reviews

#1 – B'laster 16-PB Penetrating Catalyst - 11-Ounces

B'laster 16-PB Penetrating Catalyst - 11-Ounces

B’laster comes first in our list with its 11-ounce penetrating oil. B’laster has been known to many for a lot of years now. Along with that, its solid reputation as an efficient penetrating oil keeps on growing.

PROS

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    B’laster’s penetrating oils have been around since 1957, and it has consistently been on the market
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    It can remove not only rusty parts but also frozen materials
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    Coupled with its affordable price

CONS

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    It’s not particularly useful with plastic materials

#2 – Kano Kroil Penetrating Oil, 8 oz. liquid (KROIL)

Kano Kroil Penetrating Oil, 8 oz. liquid (KROIL)

Kano’s Kroil penetrating oil is second on our list and has a different take when it comes to packaging. Unlike the B’laster that came in first, Kano packages their product in a rectangular can-like container. Thus, it’s a lot easier to pour when using it for bigger applications!

PROS

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    Efficient and very intricate in penetrating surfaces
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    It’s said to creep into the tiniest surfaces of almost any material thanks to its scientifically proven solvent
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    It’s an excellent chewing gum remover
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    It can loosen up frozen materials in merely minutes too

CONS

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    The container can be a lot stronger to prevent leaks

#3 – Kano Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL)

Kano Aerokroil Penetrating Oil, 10 oz. aerosol (AEROKROIL)

Kano makes a quick appearance yet again in our list with another rendition of its Kroil product. This time, the packaging is innovative once again. Because of its spray-like feature, Kano’s Aerokroil is a lot easier to apply in smaller batches. This aerosol application is why it’s called the Aerokroil.

PROS

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    It’s perfect for beginners who want to take it slowly
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    Active remover of grease and other third like gum and adhesive
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    Sets fast when dealing with rusted nuts and bolts
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    Creeps in just as quickly as the original Kroil

CONS

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    It’s a lot more expensive if you’ll compare it to other brands

#4 – 3-IN-ONE 10038 Multi-Purpose Oil 8 oz (Pack of 1)

3-IN-ONE 10038 Multi-Purpose Oil 8 oz (Pack of 1)

3-IN-ONE’s oil isn’t necessarily a penetrating oil like the previous ones we reviewed. That’s because you can apply it to most situations, which is a limitation of the penetrating oil. For those looking for general-purpose oils, this might be for you!

PROS

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    Useful as a penetrator, but also safe to use as an all-purpose lubricant
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    The volatility of this product is a lesser compared to actual penetrating oils
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    Versatile
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    You can use it for a broad range of situations such as maintenance, cleaning, and lubrication
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    It has a drip applicator which gives you more control and precision when applying to tight gaps

CONS

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    Not as efficient as a natural oil
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    Its reduced volatility makes it more versatile, but less robust when dealing with rust

#5 – Liquid Wrench L106 Penetrating Oil, 5.5 Oz

Liquid Wrench L106 Penetrating Oil, 5.5 Oz

Liquid Wrench’s penetrating oil also comes in an aerosol package. It also has an ergonomic container body for easier application with added comfort. Still, the best part of this product is its quick-apply feature and its effectiveness as a penetrator.

PROS

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    Lightweight and the aerosol nozzle makes it easier to use for beginners
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    Comes with an added rod applicator if you don’t want to use the sprayer
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    Top-notch precision and quick to set in tight and narrow gaps

CONS

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    It’s not particularly good at handling grime and grease
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    It has a distinct smell that might not be good for you

Wrapping it Up

When it comes to the best penetrating oil, it’s just a matter of effectiveness and price. It’s a simple item that’s handy to have, especially if you have a lot of mechanical parts. That is why it’s important to invest in the most cost-effective penetrating oil.

With this in mind, the award goes to Kano’s Aerokroil penetrating oil. Kano does a good job to give you an option to use it as a sprayer. It gives you more versatility when dealing with different situations. Besides its aerosol nozzle, Kano’s solvent is as efficient as it can get.