Differences Between AMSOIL Brake Fluid: DOT 3&4 vs DOT 5 and DOT 5.1

The brake system is an essential component of vehicles because a vehicle cannot stop without functional brakes. Choosing the appropriate AMSOIL brake fluid is not only due to the brand's reputation but also because the quality it provides is consistently stable and safe for your vehicle.

In today's article, let us explore the various types of AMSOIL brake fluids and important information to consider when selecting brake fluid for your vehicle.

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Choose the appropriate brake fluid and replace it at the right time for your safety

1. Overview of Brake Fluid

1.1. Definition

Brake fluid, also known as brake oil, is a type of lubricant product used for the braking systems of automobiles, motorcycles, and forklifts. This type of oil is typically formulated from highly refined base oil combined with other additives that provide outstanding features such as: energy transmission and lubrication, perfect metal corrosion resistance, and using the pressure generated by vehicle braking to transmit fluid within the vehicle's brake system.

1.2. Functions

Disc brake fluid plays an important role in the hydraulic braking system of automobiles and is a determining factor for the safe operation of the vehicle.

Unlike conventional lubricating oils, which cool the engine system and effectively reduce friction, brake fluid primarily serves to transmit force. Due to its nature as an incompressible fluid, brake fluid can transmit force from the brake pedal to the brake system components with precision.

Furthermore, automobile brake fluid also has other functions such as:

• Ensuring flexible force transmission even in high temperature environments and extreme climates.
• Resisting corrosion of components and parts within the vehicle's brake system.
• Providing lubricating capability that helps engines in the brake system operate more smoothly, increasing the lifespan of the pump system and copper components.
• Maintaining stable viscosity and not producing air bubbles at high boiling temperatures.

Brake fluid plays an important role in the hydraulic braking system of automobiles

1.3. Classification of Brake Fluid

Brake fluid is divided into 3 standard types: synthetic DOT 3 & DOT