Brake Fluid Maintenance: A Small Detail That Makes a Big Difference


 • May 13, 2025

When was the last time you thought about your brake fluid? While most drivers know to check their brakes when they squeak or when they can feel a shake when they press their brake pedal.  However, most people don’t even think about the importance of brake fluid and its role in a properly functioning brake system

What Does Brake Fluid Actually Do?

Brake fluid plays a key role in making sure your car stops when you hit the pedal. It transfers the force from your foot to the brake components at each wheel. If your fluid is low, contaminated with debris, or has too high of water content your braking performance can drop significantly.

Brake fluid acts as a hydraulic fluid, lubricant and corrosion protectant within your brake system.  When you depress your brake pedal it increases the pressure within your brake system due to the brake fluids inherent resistance to compressibility.  This transfers the pressure to activate your brake calipers and/or wheel cylinders.  

The lubrication and corrosion protection that brake fluid offers should not be ignored.  Brake fluid lubricate your brake system to components such as calipers and wheel cylinders to ensure that the metal components within them do not grind together.  In addition, brake fluid is hygroscopic.  Meaning that it absorbs moisture within the brake system.  This protects components such as brake lines and master cylinders from deteriorating from rust.

Why Brake Fluid Breaks Down Over Time

Brake fluid wears out over time due to the absorption of moisture, the chemical breakdown of the anti-corrosion inhibitors due to use and heat, and the buildup of debris within the system.

Old or contaminated brake fluid is more than just a maintenance issue—it’s a safety hazard. Moisture inside the fluid can cause rust and corrosion in the brake lines, decrease the fluid’s boiling point, and lead to dangerous air bubbles in the system. If you have ever felt your brake pedal getting progressively softer as you descend a long hill that is your brake fluid boiling and creating air bubbles within the system.  This all adds up to reduced braking power and longer stopping distances. In worst-case scenarios, it can even lead to brake failure.

How to Check Your Brake Fluid

Most cars have a clear reservoir under the hood so you can see the fluid level without

opening the cap. If you’re unsure or want to be safe, it’s best to have a trained technician take a look. Brake fluid is sensitive to moisture in the air, so even checking it can reduce its effectiveness if not done correctly.

When to Replace Brake Fluid

A good rule of thumb is to replace brake fluid every two years.  However, your specific vehicle and driving habits may shorten that timeline. Have your brake fluid checked during routine oil changes or scheduled service. If the fluid looks dark, milky or smells burnt don’t wait to have it inspected.  

Brake fluid should be changed at time intervals not just mileage.  Due to the absorption of moisture even a lower mileage car can experience reduced braking performance from the lower boiling point of the fluid.

Count on the Brake Experts at Shoveltown Auto Service

At Shoveltown Auto Service, we help drivers in Easton, Mansfield, and Norton stay safe with expert brake service and fluid maintenance. Our experienced team knows exactly what your vehicle needs and uses only the right brake fluid for your make and model. We’re here to ensure your brakes are always performing at their best.

Don’t take chances with your brake fluid. Whether you’re due for a fluid replacement or just want peace of mind, Shoveltown Auto Service is here to help. Contact us today to schedule a brake inspection or ask our Service Advisors any questions. 

Recent Posts

Loading posts…

Appointments

Schedule an appointment with Shovel Town Auto Service

SHARE THIS

Coupons and Promotions


Our discounts and offers provide exceptional value and savings. We curate these promotions to meet our customers' diverse needs and enhance their shopping experience. By combining quality products with competitive pricing, we make every purchase worthwhile and offer budget-friendly options. From seasonal sales to exclusive deals, we deliver enticing choices that encourage customer loyalty.


Loading offers…
Coupon code copied!

Latest Posts

September 29, 2026
For eight years, Grove Street Auto Repair has proudly supported Brakes for Breasts, raising funds for breast cancer research through this special October tradition. This year, we’re excited to build on that success by bringing Shovel Town Auto Service and Patriot Auto Service into the effort and expanding our support for this important cause. Throughout October, when you schedule a qualifying brake service at any of our three locations, your brake pads or brake shoes are FREE. We’ll then match the value of those brake pads and donate it to Brakes for Breasts, turning your brake service into meaningful support for breast cancer research.* Overall in 2025, the Brakes for Breasts program raised $292,992 with 131 independent repair shops across 34 states. Grove Street Auto Group Donated $7,392 in 2025. If you're hearing squeaking or grinding, let us do a free brake inspection for you. If your vehicle does need new brakes, there's no better time to get them done. This program is valid from 10/1 - 10/31/26. Together, let's surpass last year's donation and make an even bigger impact! 
September 3, 2026
Squeaky brakes can be more than just an annoyance. They might signal a problem that needs attention. Understanding why your brakes squeak is crucial for your safety. Brakes are a vital part of your vehicle's safety system. When they make noise, it's often a warning sign. Ignoring these sounds can lead to costly repairs or even accidents. Several factors can cause brakes to squeak. Worn-out brake pads, moisture, or dust are common culprits. Each of these issues requires a different approach to fix. Regular maintenance can prevent squeaky brakes. Knowing when to seek professional help is also important. This guide will help you understand the causes and solutions for squeaky brakes.
Person cleaning a car tire with a brush beside a white vehicle.
April 23, 2026
Tires are an investment that you likely expect to last for years of regular driving, which is why noticing uneven wear on your tread can be frustrating. Uneven tread wear leads to decreased longevity, causing more frequent replacements despite much of the tire still having adequate tread remaining.  Ensuring that your tires are experiencing even… ...
Close-up of a printer’s open black cover and internal components being adjusted by a gloved hand
March 19, 2026
One of the largest byproducts of the combustion process vehicles use to produce power is heat, which can build up in the sensitive metal internals of your motor. This thermal energy must be dealt with, otherwise the surplus of heat will begin to weaken, warp, or crack the most crucial parts of your engine.
Hands installing a black car battery in an engine bay
February 20, 2026
Car batteries are one of those components that generally don’t get much thought unless you’re having issues. So when it’s finally nearing the end of its lifespan, what are the signs you should look out for to avoid being stranded with a dead battery? How Long Do Automotive Batteries Last?
Close-up of a steaming car exhaust pipe with chrome reflections and blurred blue background
January 20, 2026
Our vehicle’s exhaust system plays numerous important roles, from moving exhaust fumes away from the cabin to quieting engine noise to removing harmful pollutants from the engine’s emissions. While a relatively simple system, an issue in just one area of the exhaust can cause a host of potential symptoms and harm.
Show More