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Web OffRoad - Brake Fluid

Fluids/Lubricants/Additives - Brake Fluid
Your guide to buying the correct brake fluid or changing the fluid for your cars brake system and saving yourself a huge repair bill. Vehicle brakes utilize hydraulic brake systems that use brake fluid to transfer the pressure of the braking action from the drivers pedal or lever to the brake master cylinder and then on to the caliper and brake pads. Sounds simple right? In fact it is far from that, vehicle brake hydraulic systems are a carefully balanced and precision system that needs respect for cleanliness when servicing and most important the RIGHT type of brake fluid to be used. There are two basic groups of brake fluid: Glycol fluids and Silicone fluids (there are also one or two car types in France using mineral fluids but we leave that aside for the purpose of this article). Glycol Brake Fluids are the most common and used in 99.9% of motor vehicles in various grades. They are named by their DOT (Department of Transport coding) either DOT 3,4 or 5. The higher the letter the higher the brake fluid quality. Most cars run happily on DOT 3 brake fluid which is a basic fluid that has a low water content. Yes shocked you may be but water is in all Glycol fluids and the scary part is that being hygroscopic the fluids actually ingest water over years of exposure to the elements and water content over 10 years can be as high as 14%. Think about what that does for corrosion inside your brake system and how that reduces the effectiveness of your brakes and promotes brake fade as the water vaporize in extreme brake use when the caliper gets hot. DOT 4 is basically the same fluid with more water refined out from the brake fluid. DOT 4 will give you a slightly firmer pedal but note, if you leave a can of DOT 4 fluid standing once the seal is broken within a few weeks it will be DOT 3 or worse. For this reason always use brake fluid from a sealed container and buy it in small bottles NOT gallon drums. Some Companies like EBC Brakes refuse to sell brake fluid in anything more than a top up bottle and quite rightly so . As a performance brake supplier selling brake fluid in gallons opens up a whole barrel of worms. Within the Glycol fluid range some manufacturers have used their own coding because some bright spark years ago started applying the DOT5 code to glycol fluids when the world regard DOT 5 as being a Silicone fluid. One such blend of highly refined brake fluid known as BF307 is worth a look and is a highly refined glycol for sports cars and race use and has a 307 degree boiling point. Boiling point is important for performance driving, the higher the boiling point the better but it is also worth noting that if any brake caliper itself gets above 250 degrees in temperature you have a problem, not even a Formula one car uses heat paint indicators above 250 degrees C. Glycol fluids draw water in through the hoses in your vehicle which you will be amazed to hear are also to a tiny degree porous. That is why it is wise for drivers to flush and replace brake fluid every 5-6 years to refresh those tired old brakes. There are several other things to note about Glycol brake fluids. First they are toxic so never drink or ingest them and secondly they are very caustic so when working with Glycol brake fluids keep them fluid and contaminated rags or your fingers away from vehicle paintwork. Wash off any spills quickly with soapy water. Silicone Brake Fluids are another story, they are not toxic (although it is never good sense to drink any such fluids) and not caustic. For this reason some classic car and motorcycle builders use silicon fluids to avoid paintwork and plastic damage. Harley Davidson for example use silicone fluids in some bikes. Always check the spec of brake fluid on your vehicle master cylinder or in the manufacturers handbook. Mixing Glycol and Silicone fluids is definitely not advised, it causes an interface and globulates which means the pressure transfer does not happen effectively and certain caliper and cylinder hydraulic seals which may be viton or nitrile rubber are designed for one type of fluid and are destroyed by the other. Once you have flushed and changed your brake fluid you will need to bleed the brakes. If you have questions regarding which type of brake fluid your vehicle should use, please call WebOffroad.com tech support and we answer your questions.

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Fluids/Lubricants/Additives - Brake Fluid - Brake Fluid
Performance Dot 3, Dot 4 and Dot 5 Brake Fluid from EBC - your industry leader in performance braking

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EBC Brakes DOT-4 DOT 4 Replacement Brake Fluid

EBC Brakes, manufacturers of the largest range of brakes in the world, brings you yet another revolutionary product; EBC DOT 4 Brake fluids. Brake fluids are fluids used in hydraulic brakes and clutches in automobiles like motorcycles, cars, trucks and some bicycles. The EBC DOT 4 Brake fluid meets all your requirements be it racing or everyday use. When using brake fluids it is essential to know which one to use; glycol-based or silicone-based. These types don’t play well together so knowing which one to use is very important for the performance of your brakes, but with EBC Brake fluids you can rest easy. Our DOT 4 Brake fluid is completely glycol-based and it also helps reduce spongy brakes and corrosion of the internal parts of brakes or clutches. Brake Fluids are subjected to very high temperatures especially in wheel cylinders of drum and disk brake calipers. Our product has a Dry Boiling temperature of 446°F and being glycol-based, the EBC DOT 4 Brake Fluid absorbs the moisture found in the air, so it doesn’t affect performance of your vehicle even in wet conditions. Our best-selling brake fluid also maintains a constant viscosity under wide range of temperatures, including extreme cold. EBC Brake Fluids are also lighter on the metals thus reducing corrosion.

Here are some of the features of EBC DOT 4 Brake Fluid:

  • DOT 4 Brake Fluid type
  • Glycol based
  • 446°F Dry Boiling Temperature
  • Reduces Spongy Brakes
  • Reduces Corrosion of internal parts of the brakes
  • Absorbs moisture
  • Low Compressibility
  • Best for passenger automobiles
  • Can also be used in racing automobiles