Brake fluid is the lifeblood of your brake system, the substance that delivers the hydraulic pressure that applies the brakes. Unfortunately it’s often overlooked – as long as there are no leaks and the level in the master cylinder is OK, we don’t think about it. But brake fluid begins to deteriorate as soon as it’s poured into your brake system, and after a few years it can deteriorate to the point where it may no longer stop your car.

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There are two types of brake fluid, glycol based and silicone based. The latter fluid, also known as DOT 5, is fine for classic cars because it won’t harm the paint if spilled. However, because it aerates easily it cannot be used in anti-lock brake systems, which negates its use in just about all late model vehicles. DOT 3, DOT 4, and DOT 5.1 are all glycol based, but DOT 4 and DOT 5.1 also contain additives that give them a higher boiling point.

It is the reduction in boiling point that affects brake fluid’s ability to perform. Glycol based fluid is hygroscopic, meaning it readily absorbs moisture, especially in humid climates. The more moisture the brake fluid absorbs, the more the boiling point is lowered. When moisture contaminated fluid gets hot and boils, vapor is formed, which unlike liquid, is compressible. If you’re driving in hilly terrain or towing a trailer, in any conditions where the brakes get hot and cause the fluid to boil, the pedal could go to the floor when depressed, without any hydraulic pressure applied to the brakes to stop your vehicle.

In addition to dangerously lowering the boiling point, moisture in the brake fluid can also corrode parts like calipers, wheel cylinders, and ABS hydraulic units, possibly causing leaks and shortening their useable lifespan. Of course, the answer to the moisture contamination problem is to change your brake fluid on a regular basis, especially if you live in a humid climate. Some vehicle manufacturers have recommended change intervals, but many do not. We offer testers that can indicate the percentage of moisture in the system. When changing fluid, always use the grade recommended for your vehicle.

In addition to brake fluid, we also have the brake lubricants you need to properly assemble brake components. These are specially designed silicone or synthetic based lubricants that can handle the high temperatures developed during brake operation. They won’t melt or harm rubber seals. Use this lube on caliper slide pins, rails, and bushings, and the brake shoe pads on brake backing plates, star wheel adjusters, and parking brake linkage on drum brakes. We also have spray cleaners that remove dirt and oil from brake parts, and disc brake quiet compounds that dampen vibration at the caliper/pad interface to prevent noise.

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Brake Lubricants Reviews

Average rating:  5  5 - 3 reviews
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DOT 5.1
Used this for my Chevy and it worked really well. Also i found there the best price for this type of fluid. I'm sure that with DOT 5.1 my vehicle will work in any cold winter.
RPosted by Rosalio (Oakland, MS) /
2013 Chevy Silverado
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