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Brake fluid - Wikipedia, the free encyclopedia Brake fluid is a type of hydraulic fluid used in brake applications in motorcycles, automobiles, light trucks and some advanced bicycles. Braking applications produce a lot of heat so brake fluid must have a high boiling point to remain effective and must also not freeze under normal temperatures. Polyethylene glycol and other brake fluid ingredients may be corrosive to paint and finished surfaces such as chrome and thus care should be taken when working with the fluid. en.wikipedia.org /wiki/Brake_fluid   (404 words)

Brake Fluid Brake fluids are not inherently hazardous, but if they contain certain additives, or if they have become contaminated with brake cleaner or other solvents, they can fall under the hazardous waste rules. Brake fluids are considered used oil and can be combined with your used oil as long as they don’t contain any solvents, brake cleaners or carburetor cleaners. Verify that contaminated brake fluid was properly managed and disposed/recycled as hazardous waste or that a hazardous waste determination was made that indicates it is a non-hazardous waste. www.ecarcenter.org /MN/mn-brakefluid.htm   (631 words)

Brake Fluid   (Site not responding. Last check: 2007-10-11) Brake fluid is hygroscopic, that is, it absorbs moisture. Brake fluid can be included in some recycling programs but should not be mixed with engine oil as part of an oil recycling or re-refining process. The two types of brake fluids are color-coded to aid in identification: glycol-based DOT 3 and DOT 4 brake fluids are clear to amber, while silicone-based DOT 5 brake fluid is purple. www2.shastacollege.edu /oil/AUTO_30/Brake_Fluid.htm   (659 words)

Tech Tip: Brake fluid debate These brake fluids are somewhat similar to automotive anti-freeze (ethylene glycol) and are not, as Dr. Curve implies, a petroleum fluid. Both DOT 3-4 and DOT 5 fluids are compatible with most brake system materials except in the case some silicone rubber external components such as caliper piston boots, which are attacked by silicon fluids and greases. Long term brake system water content tends to reach a maximum of about 3%, which is readily handled by the corrosion inhibitors in the brake fluid formulation. www.xs11.com /tips/maintenance/maint1.shtml   (988 words)

Automobile Brakes - A Short Course on How They Work When you step on the brake pedal, you are actually pushing against a plunger in the master cylinder which forces hydraulic oil (brake fluid) through a series of tubes and hoses to the braking unit at each wheel. With drum brakes, fluid is forced into the wheel cylinder which pushes the brake shoes out so that the friction linings are pressed against the drum which is attached to the wheel, causing the wheel to stop. When you apply the brakes, brake fluid is forced, under pressure, into the wheel cylinder which, in turn, pushes the brake shoes into contact with the machined surface on the inside of the drum. www.familycar.com /brakes.htm   (3607 words)

US Brake Products - Online Store   (Site not responding. Last check: 2007-10-11) The two most common brake fluids used in the automotive industry are fluids that contain polyalkylene glycol ether and fluid that contains silicone or silicium-based polymer. Fluids containing polyalkylene glycol ether are more widely used and are the only fluids that should be used in racing brake systems. Fluids containing silicone are generally used in military type vehicles and because silicone based fluids will not damage painted surfaces they are also somewhat common in show cars. www.secureperformanceorder.com /usbrakestore/fluidtech.cfm   (917 words)

Brake Pros: Brake Fluid   (Site not responding. Last check: 2007-10-11) Generally, there are two types of brake fluids: glycol, and silicone based; most brake fluids are glycol based which is short for Polyalkylene Glycol Ether. In bad cases, this will result in complete brake failure with the driver franticly pumping the brake pedal to the floor--the link between the pedal and the pads is broken with the boiling fluid. These fluids exceed DOT 4 rating and give you the added benefit of a fluid which is more dense and has a higher boiling point than normal DOT 3 or 4 brake fluids. www.brake-pros.com /fluid.asp   (568 words)

The Brake Man.com - Fluid Tech   (Site not responding. Last check: 2007-10-11) All brake fluids commonly used in automobiles sold in the United States, are regulated by the department of transportation (DOT). If a brake fluid is truly a high quality fluid, the volume needs to be the same size, or nearly so, whether it is at rest, with no pressure, or under maximum racing pressures of 1500 PSI (Pounds per square inch). In essence, the point of this entire article is that although both types of fluids have advantages and disadvantages, the bottom line is that the disadvantages of silicone brake fluid render it unacceptable as a safe and reliable alternative to polyglycol fluids under all conditions. www.thebrakeman.com /fluid_tech   (2177 words)

AP551, AP 600, Catrol SRF, Wilwood, and PFC Brake Fluid - RaceShopper.com   (Site not responding. Last check: 2007-10-11) Brake fluid serves to produce the braking action as well as to protect and to lubricate brake system components. The use of a high quality brake fluid is essential to assure the safety of the driver and passengers traveling in the automobile. Brake fluids classified as DOT3 and DOT4 are naturally hygroscopic: that is, they possess a strong tendency to absorb water. www.raceshopper.com /brake_fluid_faq.shtml   (1009 words)

Brake Fluid Facts DOT 3 brake fluids are mixtures of glycols and glycol ethers. Since DOT 4 fluids were developed, it was recognized that borate ester based fluids offered the potential for boiling points beyond the 446°F requirement, thus came the Super DOT 4 fluids - some covered by the DOT 5.1 designation -which exhibit a minimum dry boiling point of 500°F (same as silicone, but different chemistry). Additionally, a new fluid type based on silicon ester chemistry (not the same as silicon) has been developed that exhibits a minimum dry boiling point of 590°F. It is miscible with DOT 3-4 fluids but has yet to see commercial usage. www.sdvsa.org /BrakeFluidFacts.htm   (809 words)

Stealth 316 - Brake Fluid Vapor in the hydraulic system (whether it is from brake fluid, water dissolved in the fluid, or air) is bad because it is compressible, reducing braking efficiency, possibly to the point of loosing the brakes entirely. The DOT brake fluid classifications (49CFR571.116) include a set of minimum specifications that are guidelines for manufacturers as to how impervious their fluid is to heat. Brake fluid (other than DOT 5) readily absorbs water from the air in the master cylinder. www.stealth316.com /2-brakefluid.htm   (905 words)

Brakes: Brake Fluid   (Site not responding. Last check: 2007-10-11) Brake fluid must also have a high boiling point because of the heat generated during braking and must not freeze during cold temperatures. On cars with disc brakes, it's normal for the fluid level to gradually drop as the brakes wear. However, if you find that brake fluid needs to be added frequently, there may be a leak in the hydraulic system. www.carcare.org /Brakes/brake_fluid.shtml   (375 words)

Silicone Brake Fluid, part2 When the standard fluid reaches 3.7 percent moisture, as measured by another standard test, the wet boiling point of the test brake fluid is measured. DOT 4 brake fluid is glycol based, similar to and compatible with DOT 3, but it has a higher wet and dry boiling point. While boiling brake fluid is not a primary concern of vintage trucks and truckers, a fluid that absorbs moisture slower than average could translate into less corrosion in the brake system over a longer time period. www.adlersantiqueautos.com /articles/brake2.html   (1808 words)

Porsche 356 Registry: Brake Fluid for Porsche 356's The fluid became a gelatinous goo that was an incredible mess to remove from the system I have no idea what caused this to happen but suffice it to say that today I just flush brake systems every few years with fresh fluid and silicone doesn't come near my cars. I don't know about the brake light switch, but I can personally attest to the fact that some of the rubber seals in some of the Porsche original factory built brake systems are NOT compatible with silicon fluid and will swell over a period of time and lock up the brakes. While Silicone brake fluid may be the best thing since sliced bread...I still would flush any brake system, or at least bleed the wheel cylinders a couple of 'pedal pumps' each annually. www.356registry.org /Tech/brake_fluid.html   (1919 words)

Brake bleeding - Wikipedia, the free encyclopedia Brake bleeding is the procedure performed on hydraulic brake systems whereby the brake lines (the pipes and hoses containing the brake fluid) are purged of any air bubbles. This is necessary because, while the brake fluid is an incompressible liquid, air bubbles are compressible gas and their presence in the brake system greatly reduces the hydraulic pressure that can be developed within the system. The process is performed by forcing clean, bubble-free brake fluid through the entire system from the master cylinder(s) to the calipers of disc brakes or the wheel cylinders of drum brakes). en.wikipedia.org /wiki/Brake_bleeding   (379 words)

Understanding Brake Fluid - RPMnet.com tech articles - by AFCO racing   (Site not responding. Last check: 2007-10-11) Fluids containing Polyalklene Glycol Ether are more widely used and are the only fluids that should be used in racing brake systems. Fluids containing Poly glycol ethers are regarded as DOT 3, 4, and DOT 5.1. Brake fluids dry boiling point is more important then wet boiling point when used in a racing brake system. www.afcoracing.com /tech_pages/fluid.shtml   (1101 words)

Brake Fluid Explained QuadrigaMotorSports.com™   (Site not responding. Last check: 2007-10-11) Brake fluid is a type of hydraulic fluid used in brake applications in automobiles and light trucks. Brake fluid can come in a number of forms, standardized under the DOT (Department of Transportation) standard. Though a DOT 5 fluid has a superior boil point than standard DOT 3 and DOT 4 the compressibility factor of silicon brake fluid eliminates it good intention and is not recommended for extreme braking condition due to its compressibility. www.gs610.com /abc.htm   (1079 words)

[No title] Brake fluid is the lifeblood of your braking system. Have a helper hold the brake pedal to the floor while you open and shut a rear bleeder. The advantage of silicone is that it does not attract water into the braking system, greatly extending the life of brake seals and lines. www.partsamerica.com /MaintenanceBrakeFluid.aspx   (350 words)

DOT 3 Brake Fluid Pyroil DOT 3 Brake Fluid is manufactured with a blend of glycol ethers and lubricants, including corrosion and rubber swell inhibitors, to ensure long brake life. Brake fluid is used to transmit pressure from the driver's foot to the wheel cylinders and then convert that pressure into a frictional braking force on the wheels. Pyroil DOT 3 Brake Fluid is formulated to meet the demands of any automotive braking system requiring DOT 3 brake fluid. www.valvoline.com /pages/products/product_detail.asp?product=45   (216 words)

Jeep Horizons :: View topic - Brake Fluid 1A Brake fluid is possibly the single most neglected component of the automobile. The function of brake fluid is to provide an incompressible medium to transmit the driver’s foot pressure on the brake pedal through the master cylinder(s) to the calipers in order to clamp the friction material against the discs. Unfortunately the hygroscopic nature of the ether based fluids means that they should be completely replaced at scheduled time based intervals (annually would be good) and that the system should be bled to replace the fluid in the calipers every time that it is overheated to the point of generating a soft pedal. jeephorizons.com /phpbb/viewtopic.php?t=2069   (3118 words)

MISCO DOT4 Brake Fluid Tester Refractometer The MISCO Brake Fluid Refractometer is a precision optical testing instrument for measuring the boiling point and percent water content of DOT4 brake fluids. Brake fluid may be measured from the master cylinder or from each of the wheel cylinders. When brake fluid boils, the effect on performance is the same as having air in the system -- the pedal can travel to the floor without slowing or stopping the vehicle. www.misco.com /products/DOT4.html   (686 words)

Brake Masters® An Honest Brake Since 1983 A Brake Fluid Exchange is similar to an engine oil change for your brake system. Brake Fluid Exchange removes the old fluid and replaces it with clean, fresh new brake fluid. The color of brake fluid is not a reliable indicator of its performance ability. www.brakemasters.com /brakefluid.html   (161 words)

Super DOT Brake Fluid   (Site not responding. Last check: 2007-10-11) DOT 3 and 4 are the commonly used specifications for automotive brake fluid; DOT 3 is generally required for disc brakes. DOT 5 brake fluid is generally a silicone product and is not recommended unless the system is specifically designed for it. NEO "Super DOT 610" may be added to the system or may replace the existing brake fluid at any time; it is not necessary to flush the system before switching to NEO. www.neosyntheticoil.com /bkfluid.htm   (614 words)

Unbeknownst To Many Vehicle Owners, Brake Fluid Does Wear Out, Larry Carley, Brake & Front End, April 2001 Most brake fluids usually surpass these standards, but it's important to know what the minimums are because of their potential impact on driving safety. Another method of checking brake fluid is to determine its moisture content and boiling temperature using a tool called a "refractometer." This is a precision optical instrument that uses the fluid's "refractive index" to reveal its condition. Promoting brake fluid changes for preventive maintenance is a hard sell, no doubt about it - but it's a lot easier to convince a customer his brake fluid needs to be replaced if you can show him the fluid is badly contaminated with moisture. www.babcox.com /editorial/bf/bf40142.htm   (2188 words)

Brake Fluid Comparison The dry boiling point is applicable when fluid is fresh and the wet boiling point after the fluid has been exposed to moisture and has had the opportunity to adsorb water. In addition to DOT level, another important consideration in selecting a brake fluid is the presence of anti-corrosion additives, commonly found in street fluids but not in track fluids. This is where the fluid is exposed to the highest degree of heat and the heat causes the corrosion inhibitors to breakdown. www.volvoclub.org.uk /faq/BrakeFluidComparison.html   (928 words)

Brake Fluid, Air Jacks, Brake Calipers, Brake Discs, Brake Kits, Pads, Clutches, Master Cylinders, Pedal Boxes, Slave ... All AP Racing Brake Fluids are compatible with all hydraulic brake systems designed to conform to S.A.E. J1703 requirements. Conforms to and exceeds FMVSS 116 DOT 4 and SAE J1703 and J1704. All AP Racing Brake Fluids are Polyalkalene Glycol Ether based and are not a silicone based fluid. www.apracing.com /car/brakefluid/index.htm   (240 words)

Using Speed Bleeders® to Change the Brake and Clutch Fluid on a Valkyrie You don't have to maintain the level of fluid in the reservoir to the very top of the reservoir, but you don't want it to get so low, either, that air can come in near the bottom of the reservoir (where the fluid is being pushed out). If this is the front brake reservoir we're talking about, put the tube on the other front brake bleeder, and perform steps 5 through 8 again. Dispose of the old brake fluid in an environmentally responsible and legal manner. www.billanddot.com /brake-bleeding.htm   (1560 words)

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