Can You Mix Synthetic Brake Fluid With Non Synthetic

Can You Mix Synthetic Brake Fluid With Non Synthetic, <h1>Can You Mix Synthetic Brake Fluid With Non Synthetic?</h1> <h2>Introduction</h2> <p> Brake, blog, can-you-mix-synthetic-brake-fluid-with-non-synthetic, KampionLite

Can You Mix Synthetic Brake Fluid With Non Synthetic?


Brake fluid is an essential component of the braking system in your vehicle. It plays a crucial role in transferring the force applied on the brake pedal to the brake pads, allowing you to slow down or bring your vehicle to a complete stop. Two types of brake fluids are available on the market – synthetic and non-synthetic. Many car owners wonder whether it is safe to mix these two types of brake fluids. In this article, we will explore this topic in detail.

Synthetic Brake Fluid

Synthetic brake fluid is formulated using synthetic compounds, such as glycol ethers, borate esters, and silicones. These compounds provide better resistance to heat and moisture compared to non-synthetic brake fluids. Synthetic brake fluid has a higher boiling point, which means it can withstand higher temperature conditions without boiling and losing its effectiveness. This makes it an excellent choice for high-performance vehicles that are subjected to extreme braking conditions.

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Non-Synthetic Brake Fluid

Non-synthetic brake fluid, also known as conventional brake fluid, is made from a blend of glycol and glycol ether. It has a lower boiling point compared to synthetic brake fluid, which means it may not be suitable for vehicles that undergo intense braking situations. Non-synthetic brake fluids are commonly used in regular passenger vehicles and do not require the enhanced performance capabilities provided by synthetic brake fluids.

The Concern of Mixing Synthetic and Non-Synthetic Brake Fluids

Mixing different types of brake fluids can lead to various complications and potential damage to the braking system. When synthetic and non-synthetic brake fluids are mixed, they can create a chemical reaction that affects the fluid’s properties, such as boiling point, viscosity, and lubricating abilities. This can compromise the overall effectiveness and performance of the brake fluid.

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1. Compatibility

The first concern when mixing synthetic and non-synthetic brake fluids is their compatibility. Synthetic and non-synthetic brake fluids are formulated differently, and their chemical compositions may not be compatible with each other. Mixing these fluids can cause them to separate and form sludge or gel-like substances, which can clog brake lines, hoses, or even the master cylinder.

2. Boiling Point

The boiling point of brake fluid is essential as it determines its ability to withstand high temperatures. Synthetic brake fluids have a higher boiling point than non-synthetic brake fluids. Mixing these two types can lower the boiling point of the fluid, reducing its ability to handle intense braking situations. This can lead to brake fade or a spongy brake pedal, compromising the safety of your vehicle.

3. Lubrication

Brake fluids not only transmit force but also lubricate various components in the braking system. Synthetic brake fluids have better lubricating properties compared to non-synthetic brake fluids. Mixing these fluids can result in reduced lubrication, leading to increased friction and wear on components such as pistons, seals, and calipers. Over time, this can cause damage and potential brake failure.

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4. Corrosion and Seal Compatibility

Different types of brake fluids have varying levels of corrosiveness. Mixing synthetic and non-synthetic brake fluids can create an imbalance in the chemical properties, leading to increased corrosion within the braking system. Furthermore, some seals and rubber components may not be compatible with one or the other type of brake fluid. Mixing the two can cause seals to deteriorate, resulting in leaks or brake system failures.


In conclusion, it is not recommended to mix synthetic brake fluid with non-synthetic brake fluid. The different chemical compositions, boiling points, lubricating properties, and compatibility issues can compromise the effectiveness and safety of your vehicle’s braking system. It is crucial to use the correct type of brake fluid recommended by your vehicle’s manufacturer. Regularly inspect and flush your brake fluid according to the maintenance schedule to ensure optimal performance and safety on the road.



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