How to Use a Brake Fluid Tester

As a car owner or driver it is critical to keep your car’s brakes in good working condition. Without a functioning brake system, cars at any speed would pose a threat to drivers and pedestrians. One of the most important factors to good brakes is your brake fluid. A crucial tool to have when checking your brake fluid is a brake fluid tester. But what does it do?

First we will discuss what brake fluid is used for. Brake fluid is used to create hydraulic pressure within the brake line in order to engage your car’s brakes. As pressure is applied to the brake pedal, brake fluid is pressed through the brake line. As this pressure is applied to the brake calipers which house the brake pads, where the pads are pressed against the brake rotors thus stopping the car.

With brake fluid having such an important role in your car’s brake system, it is important to know that the fluid level is where it needs to be. By just observing the brake fluid reservoir we can see whether or not there is enough brake fluid inside of the car. If more is needed, the car owner can simply pour more brake fluid into the reservoir to top off the levels. But brake fluid can develop other issues as well, and this is where the brake fluid tester comes in.

What is a Brake Fluid Tester?

A brake fluid tester is used to measure the moisture content and mineral content of your car’s brake fluid. Over time, brake fluid can absord moisture and minerals from the air or excess moisture inside the brake line. When this happens, your car’s brake fluid becomes less effective and can even cause brakes to fail all together. This is obviously something we would want to avoid.

While it is completely normal for your brake fluid to lose its concentration over time, it is imperative to know when your brake fluid becomes ineffective. This way you can flush your brake fluid reservoir and add new brake fluid to your car.

The brake fluid tester is a simple device. Modern fluid testers are battery powered and can provide a digital reading of your car’s brake fluid quality. However in the past, brake fluid test strips were used as a quick and disposable option. Thanks to technology, we now have brake fluid testers that work whenever we want with just a small battery.

What is Being Tested?

We can assume using common sense that the brake fluid tester is used to test your brake fluid. But what it essentially is is a brake fluid moisture tester. By determining the water content of your brake fluid, the brake fluid moisture tester is doing just that.

Once you insert the tester into the brake fluid reservoir it will provide a reading. Brake fluid testing strips will provide an analog result by the strip changing a particular color. The digital tester will provide a read out of exactly what the brake fluid moisture content is.

If the tester shows a green color or 0% moisture levels, that means your brake fluid has no water content inside. Which is great news because not only is your brake fluid in perfect working condition, but you do not have to worry about replacing your brake fluid for quite some time.

If the tester shows a yellow color then that means there is low water content in your brake fluid. The digital brake fluid tester or LED brake fluid tester will show you a percentage of either 1%, 2%, or 3%. These moisture levels in your brake fluid do not spell emergency, but it is worth determining if there are any other issues. You will not need to replace the brake fluid immediately, but you will need to keep a close eye on your fluid levels over time.

If your brake fluid meter shows a red color or any moisture content level over 4% then that means your brake fluid has become dangerously ineffective. If this happens, first assure that your brake fluid level is correct and that there is no damage to the car. Next check if your car’s brakes squeak when in use or show any signs of weakness. If all is good mechanically then you should go ahead and replace the brake fluid in the car.

Things to Look Out For

If you just changed your brake fluid and you get either a yellow or red water content level, there may be damage to your brake fluid reservoir or the brake line. The last thing you want is for any water or air to be getting into your brake line. If the brake fluid is not the only substance in the brake line then the entire brake system will not function properly.

Also keep an eye on how your brakes operate while driving. If you notice your brakes becoming tough to engage or do not slow down your car well enough, the first thing you should do is test your brake fluid. Since your brake fluid naturally develops moisture over time, it is a good idea to check on it routinely to ensure safe driving.

Buy a Brake Fluid Tester

If you are in the market to purchase your own brake fluid tester, we highly recommend the Kingbolen Brake Fluid Tester.

This premium brake fluid device enables anyone to test their car’s brake fluid. Even if your brake fluid levels are low, this tester includes a metal hose so you can reach the tester into your brake fluid reservoir.

The Kingbolen Brake Fluid Tester has a built in LED display that tells you exactly what condition your brake fluid is in. So no matter what type of car you have, this tester can read into any type of brake fluid.

So if you would rather test your own brake fluid rather than getting your car inspected, this is a much more affordable option. Plus, you can use the new brake fluid tester for years to come. This way you will know your brake fluid never goes bad. Click here to check it out.