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Finding the Right Penetrating Oil

Sometimes, you need to have a penetrating oil that’s capable of removing rust. Perhaps you are working with industrial equipment that has rusted bolts, fasteners, or other elements that have seemingly become immovable. This can be frustrating, and it can slow down the work you are doing, or even grind it to a halt.

Rather than continually trying to force your way through the rust, there is another far easier option. You can opt to use a penetrating oil on the rusted pieces, which will help to loosen them and make removal possible.

How Do Penetrating Oils Work?

Rust is the bane of just about anything made of metal, whether it’s an engine piston, chain mechanism, hitch, wind turbine or an old piece of equipment. Rust is an oxidation reaction. The iron or steel reacts with water, which creates rust. When something is rusted, it often becomes seized with other metal pieces, making them difficult to separate from one another. This is why it’s so hard to turn and remove rusted bolts and nuts, for example.

However, we need to be able to break through that rust to make repairs and replace those metal pieces. Using a penetrating oil is the best option for the job, as it can help to loosen the items and even remove some of the rust. It will prevent them from sticking together, so they can move easily again.

You must make sure to have some quality rust penetrating oils available for use around the workshop or plant. Those who run automotive repair shops, manufacturing facilities, or professional trade technicians should certainly have a good supply readily available. Below, you will learn more about what you should expect from a great penetrant and some of the main reasons that Kroil is a fantastic option to choose.

What is the Best Penetrating Oil?

Penetrating oils may be petroleum based, plant based, synthetic from petroleum or non-petroleum source or a blend of any or all of the above, and have a very low viscosity. When used as a spray (also known as aerosol), you’re able to reach areas that you might not be able to reach otherwise. The nature of this type of penetrating oil also means that it has low surface tension and can penetrate even the smallest crevices, which will loosen the metal connections, even when they appear to be rusted solid.

Naturally, when you are choosing a penetrating oil, you want to be sure you are buying the best. You need to be certain that the penetrant you choose is capable of getting the job done as quickly and as hassle-free as possible. While there are many options on the market, Kroil Penetrant is always a top choice. It has been industry-proven to work well and has been around since 1939.

Kroil is capable of penetrating tight spaces and threads, where it will loosen frozen shafts, nuts, bolts, pulleys, and much more. It can remove and prevent rust from occurring. It will clean and will displace moisture, which can help to stop the rusting process from continuing. Kroil Original Penetrant is available in both liquid or aerosol, in varying sizes.

What About Penetrants with Lubricants?

Of course, you might need to do more than just penetrate the rust to facilitate the removal of a fastener or a bolt. In some cases, you might want to use Kroil Penetrant with Silicone. This product can help you to loosen the frozen metal parts that you need to move, but it will also provide lubrication to those pieces for lasting protection. It’s a good option for those who want to have excellent penetration, as well as lubrication and rust prevention.

This penetrating oil can penetrate even into small spaces, where it can break the bonds that have been caused by rust or corrosion. The added lubrication at the molecular level helps to get those parts moving again. The penetrating oil with the silicone can work to free any type of metal part that has been affected by rust or corrosion. It’s often used to help with frozen bearings, hinges, chains, gate valves, and slides, but it can be used for far more. It is available in a liquid or aerosol spray, in varying sizes.

The Biggest Benefits of Using Quality Penetrating Oil

If you work with anything that has moving metal parts, there is a good chance that you will eventually encounter rusted or corroded parts. Using a penetrating oil ensures you will be able to handle that rust or corrosion and get on with your work.

Works Everywhere

One of the major benefits of Kroil and other high-quality penetrating oils is that they can be used almost anywhere that you need them. If there are tight parts, rusted pieces, or threads that seem unreachable, you can use the penetrant to get to them with ease.

Attacks and Resists Corrosion

Corrosion happens to mechanical components all the time. With penetrating oil, you can attack the corrosion and even remove some of it, making it possible to turn bolts, remove mechanical pieces, and more. Because the penetrant can displace moisture, it can do more than just make parts moveable again, though. It can help to prevent further corrosion from occurring, so it can reduce the likelihood that you will be faced with another instance of pieces that are corroded solid.

Easier Repairs

How much time have you spent trying to remove rusty or seized bolts and nuts when doing maintenance or repair work? It can be time-consuming and frustrating when you feel like you aren’t getting anywhere. However, when you use this Kroil Original Penetrant, it can help to reduce the amount of time spent on the job, and it makes it far easier. It also helps to make the job safer. If you’ve ever stripped a nut and hit your hand against another piece of the machine or the ground, you know just how much of a problem rust and corrosion  can be. The penetrating oil will help to eliminate this problem.

Fast and Deep Penetration

A quality penetrant like Kroil can penetrate fast, which will help to speed up your work. It will also penetrate deeper, getting into the threads, spaces, and small openings that might seem impossible to reach. This penetrating oil can go to work quickly to help loosen items that you thought were a lost cause.

Removes Rust and Carbon Deposits

When you use Kroil products, you can rest easy knowing that they will only attack and remove the rust and the carbon deposits. They will not do anything to damage the metal that is beneath them.


Kroil Penetrant with Silicone can provide a long-lasting lubricating solution for those who need it. You will want to make sure that you understand the lubricating qualities of the penetrating oil that you choose, so you can opt for the right one for your needs.

Cleaning Help

Some of the penetrating oils that are available today can provide help with cleaning certain types of items. They can help to remove grease, tar, and even rust in many cases. The oils will work as a solvent that can help to break down these types of contaminants. This will make them much easier to remove from the metal surface.

Reducing Noise

One of the other ways that you can get more use out of the penetrating oil is for noise reduction. You can use the penetrant on squeaky parts of a chains, saw blades or track pins. It can help to remove the rust that’s on these parts, so they can move freely. To ensure that they are properly lubricated, you might want to choose Kroil Penetrant with Silicone.

Tips for Using Penetrating Oil

When you are using penetrating oil to deal with rust, it’s always in your best interest to follow the penetrant manufacturer’s guidelines. The manufacturer knows the proper way to use their product to provide you with the best results. In some cases, you will find that after you’ve applied the penetrating oil, the pieces will start to become loose and moveable within just a short time. It might only be 15 minutes to an hour before the parts can be moved.

However, it’s often better to let the penetrant do its job of penetrating and getting into all the tight spaces, crevices and threads. You might need to leave the penetrating oil on for several hours, or even overnight to get the best results.

Rust Removal

It is possible to remove rust from just about anything. However, depending on the amount of corrosion and damage that have occurred, the results can vary. It can take a long time and a lot of elbow grease to remove rust, and in some cases, the damage from the rust to the metal beneath might be too great to salvage the metal. However, when it’s caught relatively early, there are some methods you can use to take off the rust.

Using Kroil Penetrant can help to loosen and remove rust, as well, as discussed above. This is ideal when you are trying to remove parts from a vehicle or other hard-to-access areas. Of course, this is most useful when removing fasteners, nuts, bolts, and other metal pieces that have become “bonded” by rust. It can be a good way to start getting rid of some of the rust.

However, it doesn’t mean that the penetrating oil will remove all the rust from the object. In some cases, you might need to replace the items that you’ve removed. Other times, you can use other techniques, such as those below, to clean them. These two easy techniques can also be used to help remove rust from other items, such as metal tools.

Baking Soda

You can rinse off the metal item and then dust it with baking soda, which will cling to it. Let the piece sit for about an hour and then use a metal brush to scour and remove the rust down to the metal. You might have to repeat the process if there is a lot of rust, and it’s not coming off. Once you are done, rinse the piece and then dry it off with a towel. This technique is a good option when the rust isn’t too severe and when the metal is relatively thin.


Another easy option is to use white vinegar. If you have an item that can be submerged completely in vinegar, put them into a vinegar bath. If you can’t get part of the item wet, you can soak rags in vinegar and then wrap them around the parts that are rusted. Let them sit like this overnight. Remove them from the vinegar and use a metal brush or steel wool to scrape away the rust. This is a good option for tools and other items that are made entirely from steel. It’s an easy method, but it does require a lot of soaking.

What to Consider When Choosing a Penetrating Oil

When you are buying penetrating oil, there are several things that you will want to keep in mind before making a purchase.

First, you need to consider whether you want to choose an option that has additives like silicone. This is a good option for those who need to have added lubrication to the pieces they are oiling. Always check to see what additives are in the oil to determine whether it will work for your needs or not.

You also need to think about how you plan to apply the penetrating oil. Do you need to have a container that lets you drip the oil drop by drop? Do you want to have a large amount so you can apply liberally or soak it? Do you prefer an aerosol spray? Consider the amount of penetrating oil that you will want to buy at once. How much will you need for your current project, and how much do you want to have around for later use?

Choose the Best

Kroil offers high-quality penetrating oils to get through the rust, so you can get your project back on track. The company has been in business for more than 80 years and continues to provide quality options that can help with your needs in any commercial area. Save time, money and trouble by choosing Kroil penetrating oils for all of your industrial and commercial applications.


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