Technician performing brake fluid exchange.

Brake fluid exchanges maintain brake system, components

In Brake Fluid Flush, Brakes by Steves Auto Repair and Tire

The brake fluid in today’s cars, trucks and SUVs are under greater pressure and heat than ever before. This is simply from normal wear and tear.

In order for a vehicle to stop, the brake pads clamp against the brake rotors, which are connected to the wheels. The calipers hold the pads.

As you brake – which is often if you live or travel through Northern Virginia – a lot of moisture and heat is generated.

Regular brake fluid exchanges help maintain this system and its components.

Benefits of a brake fluid exchange

Moisture in the brake system can lead to corrosion. Flushing the brake fluid removes moisture and prevents corrosion from forming on components, including the calipers.

This service also helps your anti-lock braking system (ABS) last longer and restores the brake pedal so it feels firm.

If you put off a brake fluid exchange, the internal seals can wear out prematurely. The inside of soft brake hoses may also degrade, making it difficult for brake fluid to get where it needs to. 

Bleeders could become rusted overtime from not being adjusted.

How often to get this service

Steve’s Auto Repair recommends brake fluid exchanges every 30,000 miles. The time between each flush does differ among vehicles. Some manufacturers suggest this service be performed more frequently. 

Cars with systems that are run by computers, for example, may require them on 18 month or 24 month intervals. By looking at the owner’s manual, you can confirm what services your vehicle needs and when.

Mileage isn’t the only factor to consider when it comes to brake fluid flushes. You should also keep an eye out for certain symptoms that let you know the fluid needs to be replaced.

One indicator is dark fluid that contains rubber particles that have worn off the ABS or master cylinder. A soft brake pedal is another sign. This occurs when moisture that has collected in the brake system is boiling.

We can check the brake fluid with a test strip, which tells us if there are metal contaminants. Sometimes you may not be able to see metal contaminants in the brake fluid reservoir. If you see black specs, that normally has to do with pieces of the rubber seals. 

Another test that can be done is testing for moisture in the system. That would tell you if you have too much water in the system. The water can boil under extreme braking and cause a brake pedal fade. 

A lot of pen testers we have found don’t do a very good job, so we stopped using them.

Cars that have electric brakes don’t need a brake fluid exchange.

Brake fluid flush process

We replace old brake fluid with new brake fluid when performing a brake fluid flush. This is done using a machine that’s hooked up to the master cylinder. New fluid is added to the machine and the old fluid is removed by going to each wheel.

Our technicians use BG DOT 4 Brake Fluid. This product hinders rust and moisture from building up and preserves the brake system.

When in bumper to bumper traffic, you should feel confident as you step on the brake. Brake fluid exchanges are something you can do to take care of the system, preventing expensive repairs and keeping you and your family safe.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located in Woodbridge, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.