Is Transmission Fluid Corrosive to Paint?

Some people are concerned that transmission fluid can corrode their car’s paint. Transmission fluid is a type of oil, and as such, it can contain acids and other corrosive chemicals. Some people believe that this corrosive effect can cause paint damage over time. 

Transmission fluid can be a confusing topic, and there are many different interpretations of its effects. That’s why we’re here to clear up any confusion and answer any questions you may have about transmission fluid and paint. In this article, we’ll explore the different myths about transmission fluid and paint, and provide you with the truth about how corrosive it is.

Is Transmission Fluid Corrosive to Paint infographic

Is Transmission Fluid Corrosive to Paint?

Yes, Transmission Fluid can be corrosive to paint. Corrosion can occur when the transmission fluid seeps into the paint and starts to break it down. This is a result of the acidity of the transmission fluid and the high temperatures that it can reach. The acid can also cause the metal parts of the transmission to corrode. In extreme cases, rust may form on the metal parts and cause them to break.

How to Protect Car Paint from Corrosion of Transmission Fluid?

There are a few easy steps you can take to protect your car paint from corrosion caused by transmission fluid. 

  • First and foremost, always keep your car clean. By keeping your car clean, you will reduce the amount of debris and dirt that is deposited on the paint. 
  • Second, use a fluid flush if your car has an automatic transmission. This will help to flush the transmission fluid and remove any residue that may be damaging the paint. 
  • Third, make sure to change your transmission fluid regularly and use a high-quality product that is designed for protecting car paint. 
  • Fourth, use a quality sealant on the paint surface every time you change your transmission fluid. This will help to protect the paint from further damage and corrosion. 
  • Fifth, always keep your car serviced and inspected to ensure that the paint is in good condition.

Does Brake Fluid Damage Paint?

Yes, brake fluid can damage paint if it’s not properly diluted or if it’s left on the paint for an extended period. brake fluid is a highly concentrated solution of synthetic polymeric brake fluid, and when it comes into contact with water and oil, it forms a protective barrier that blocks the solvents and contaminants from leaving the paint. This can cause the paint to fade and crack, and in some cases, it can even cause the paint to bubble.

To prevent damage to your paint, always dilute brake fluid before using it on your car, and make sure to keep it away from the paint for as long as possible. If you do get brake fluid on the paint, try to remove it as quickly as possible with a clean cloth or a sponge. If that doesn’t work, you can try a mild soap and water solution or a degreaser.

Does Power Steering Fluid Damage Paint?

If you have power steering fluid leaking, it can damage the paint on your car. The fluid is a petroleum-based product and contains solvents and other chemicals that can attack the paint on your car. The damage can range from mild to severe, and it is important to get it fixed as soon as possible to prevent further damage.

To check if the power steering fluid is leaking, you can use a dipstick to check the level. If the level is high, it is probably time to get it fixed. If the level is low, you may not need to get it fixed right away. However, if the level starts to rise slowly over time, it is probably time to get it fixed.

Does Gear Oil Damage Paint?

Yes, Gear Oil can damage paint if it is not used correctly. Gear oil is a type of lubricant used to keep the machinery running smoothly. It is a blend of several oils, including mineral oil and vegetable oil. When the gear oil is applied to the moving parts of the machinery, it becomes a type of solvent that can dissolve the paint.

If the gear oil is not removed properly, it can cause damage to the paint. The solvent can also cause rusting and peeling of the paint. In extreme cases, the gear oil can even cause a fire. When using gear oil, be sure to use a proper lubricant and remove it properly to avoid any damage to your paint.

Is Automatic Transmission Fluid Conductive?

Yes, Automatic Transmission Fluid is conductive. This is because it contains antifreeze which allows it to carry electricity. This is why it is important to keep Automatic Transmission Fluid at the correct viscosity level so that it can properly lubricate the gears. Over time, if the viscosity level becomes too low, the transmission will become less efficient and may even seize up.

The viscosity of Automatic Transmission Fluid should be maintained at a level between 5,000 and 10,000 cps (centipoise). This will help to keep the gears meshing properly and the transmission running smoothly. If the fluid becomes too thick, it will cause gear skipping and decreased fuel economy. Conversely, if the fluid is too thin, it can cause the transmission to wear prematurely.


It’s no wonder that so many people are wondering if the transmission fluid is corrosive to their car’s paint. Fluids can corrode the paint on your car in several ways, from causing brake fluid to damage the paint to power steering fluid to damage the paint, to gear oil damaging the paint. 

You must be especially careful when it comes to using any of these fluids around your car’s paint because even a small amount can cause extensive damage. To avoid any accidental damage, be sure to read the safety instructions that come with each product and always use caution when working on or around your car.

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William Baldwin

This Is William Baldwin, The Founder & Managing Editor of this website. Me and my team share automotive tips, tricks, and news

Fact Checked And Mechanically Reviewed By


Talha Atta

Talha Atta, a Mechanical Engineer and experienced technical content writer and editor at with a passion for the automotive industry.