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  • Get rid of steering wheel shake when braking.

    While seeming counterintuitive at first, some limited degree of water absorption is desirable. DOT3/4/5.1 glycol-based fluids will readily absorb water. The helpful part of this is that every brakesystem will contain some moisture, which cannot be avoided. Absorbing this moisture, whilereducing the fluid’s boiling point and increasing its compressibility, allows the corrosion inhibitors inthe better brake fluids to do their job and keep system components fresh. And, just like withantifreeze, these inhibitors are gradually depleted in use, which is the primary reason brake fluidneeds to be changed periodically.The one exception to this is the silicone-based DOT 5 specification fluid, which is not water miscible.This fluid keeps water molecules together, sinking to the lowest point ...

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    While seeming counterintuitive at first, some limited degree of water absorption is desirable. DOT3/4/5.1 glycol-based fluids will readily absorb water. The helpful part of this is that every brakesystem will contain some moisture, which cannot be avoided. Absorbing this moisture, whilereducing the fluid’s boiling point and increasing its compressibility, allows the corrosion inhibitors inthe better brake fluids to do their job and keep system components fresh. And, just like withantifreeze, these inhibitors are gradually depleted in use, which is the primary reason brake fluidneeds to be changed periodically.The one exception to this is the silicone-based DOT 5 specification fluid, which is not water miscible.This fluid keeps water molecules together, sinking to the lowest point in the system as water isheavier. It is at these water concentration sites where corrosion is first to attack.DOT 5:WARNING: DOT 5 has a silicone base and is purple in color. It is NOT hygroscopic, so it will notabsorb moisture. It has a minimum dry boiling point of 500°F (260°C) and a minimum wet boilingpoint of 356° (180°C). It is compatible with the same rubber seal formulations as DOT 3/4/5.1 fluids.Also, it will not damage paint. While this initially sounds like a winning combination, it is unsuitablefor racing or any type of hard use for three primary reasons:1) When hot, air bubbles easily form, which are nearly impossible to remove and cause poor pedalfeel.2) Since it does not absorb moisture, water in the fluid settles out, causing severe localizedcorrosion, freezing or vapor lock.3) It DOES NOT MIX with DOT 3, DOT 4, or DOT 5.1, so cross-contamination may occur if crew

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  • Get rid of steering wheel shake when braking.

    Existence of a brake caliper expander does not preclude the wisdom of bleeding the fluid through the bleed port over pushing it back into the system. The high temperatures near the wheel caused by braking friction can break down the fluid over time. Futhermore. it is likely that during the course of the pad life that fluid has been "topped off" at the master cylinder reservoir. This could cause it to to overflow during caliper expansion. I admit I am guilty of doing this many times over. I now bleed the calipers after pad installation with fresh fluid. Which is very simple and will add to the life of your braking system. Many vehicles still use hydrophilic fluid which means it absorbs water so periodic fluid replacement is recommended. Do not under any circumstances try to use...

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    Existence of a brake caliper expander does not preclude the wisdom of bleeding the fluid through the bleed port over pushing it back into the system. The high temperatures near the wheel caused by braking friction can break down the fluid over time. Futhermore. it is likely that during the course of the pad life that fluid has been "topped off" at the master cylinder reservoir. This could cause it to to overflow during caliper expansion. I admit I am guilty of doing this many times over. I now bleed the calipers after pad installation with fresh fluid. Which is very simple and will add to the life of your braking system. Many vehicles still use hydrophilic fluid which means it absorbs water so periodic fluid replacement is recommended. Do not under any circumstances try to use a fluid that is not recommended for your vehicle because brake seals can swell or degrade if the wrong fluid is used. This could lead to brake system failure with catastrophic results.

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