What is a Good Substitute for Penetrating Oil? Unlock Solutions

What is a Good Substitute for Penetrating Oil?

Penetrating oil is a valuable tool when it comes to loosening rusted or stuck nuts, bolts, and other mechanical parts. However, if you find yourself in a situation where you don’t have penetrating oil on hand, there are several effective substitutes you can use. Let’s explore some of the best alternatives:

1. Homemade Penetrating Fluid

One of the most popular substitutes for commercial penetrating oil is a DIY homemade penetrating fluid. This homemade solution typically consists of a mixture of acetone and automatic transmission fluid (ATF). Acetone is a powerful solvent that can help break down rust and corrosion, while ATF provides lubrication and helps penetrate tight spaces.

How To Make Homemade Penetrating Fluid:

  1. Mix equal parts acetone and ATF in a container.
  2. Shake the mixture well to ensure thorough blending.
  3. Apply the homemade penetrating fluid to the rusted or stuck part and let it sit for some time to work its magic.

2. Vegetable Oil with Acetone

Another effective substitute for penetrating oil is a mixture of vegetable oil and acetone. Vegetable oil provides lubrication, while acetone helps break down rust and corrosion. This homemade solution can be a cost-effective alternative to commercial penetrating oils.

What is a Good Substitute for Penetrating Oil? Unlock Solutions

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3. WD-40

While WD-40 is not a true substitute for penetrating oil, it can still be effective in some situations. WD-40 is a versatile lubricant that can help loosen rusty or stuck parts. However, for more stubborn or heavily rusted parts, a dedicated penetrating oil may be more effective.

4. Transmission Fluid

Automatic transmission fluid (ATF) can also serve as a makeshift penetrating oil. ATF has lubricating properties that can help loosen rusted parts. Simply apply ATF to the stuck part and allow it to penetrate before attempting to loosen the fastener.

What is a Good Substitute for Penetrating Oil? Unlock Solutions

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5. PBlaster

PBlaster is a commercially available penetrating oil that is known for its effectiveness in loosening rusted bolts and nuts. While it may not be a homemade substitute, PBlaster can be a valuable alternative when penetrating oil is not available.

6. When Not to Use Penetrating Oil

It’s important to note that there are certain situations where using penetrating oil may not be advisable. For example, if you are working on plastic or rubber components, using a penetrating oil that contains PTFE or silicone is recommended to prevent damage to the material.

Additionally, when working with electrical components or near open flames, it’s best to avoid using penetrating oil to reduce the risk of fire or electrical hazards.

Frequently Asked Questions

What Can You Use In Place Of Penetrating Oil?

A good substitute for penetrating oil is a homemade mix of acetone and ATF, or using PBlaster for rusty bolts.

What’s The Best Homemade Penetrating Oil?

The best homemade penetrating oil is a mixture of vegetable oil and acetone. This combination acts as a great solvent and helps loosen rusted bolts and parts. It is a cost-effective alternative to store-bought penetrating oils.

What Makes A Good Penetrating Oil?

A good penetrating oil is one that contains PTFE or silicone, as these ingredients repel water and provide extra slipperiness. It should be able to effectively penetrate rust and corrosion, making it suitable for loosening stuck bolts and other parts.

Homemade alternatives, such as a mixture of acetone and ATF, can also be effective substitutes for commercial penetrating oils.

Can I Use Wd-40 As Penetrating Oil?

Yes, you can use WD-40 as a substitute for penetrating oil. WD-40 is effective for loosening rusted parts.


While penetrating oil is a go-to solution for loosening rusted or stuck parts, there are several effective substitutes that can be used in a pinch. Whether you opt for a homemade penetrating fluid, vegetable oil with acetone, WD-40, transmission fluid, or PBlaster, each alternative offers its unique benefits in breaking down rust and corrosion.

Next time you find yourself in need of a penetrating oil substitute, consider one of these alternatives to help you tackle stubborn rusted fasteners and mechanical parts with ease.

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