Comma BF51L Dot 5.1 Synthetic Brake Fluid, 1 Liter

£9.9
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Comma BF51L Dot 5.1 Synthetic Brake Fluid, 1 Liter

Comma BF51L Dot 5.1 Synthetic Brake Fluid, 1 Liter

RRP: £99
Price: £9.9
£9.9 FREE Shipping

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DOT 5.1 is totally different than DOT 5 brake fluid. Think of 5.1 as a glycol based DOT 4 fluid that meets DOT 5 silicone-based fluid standards. The 5.1 fluids are used primarily in vehicles equipped with ABS brake systems. Additionally, there are some brake systems that may not work with silicone brake fluids because of their chemical composition. It's possible if you have some silicone rubber external components, things like your caliper piston boots, that a DOT5 brake fluid could actually break them down. Let's take a look at the minimum boiling temperatures of DOT brake fluid as specified by the regulatory bodies. Brake fluid is an essential part of the hydraulic braking system. Without it, or without enough if it, the forces you apply at the brake lever would not be transferred to the caliper, pads and rotor.

The biggest difference between the two brake fluids is their chemical composition. The DOT 4 is glycol-based and the DOT 5 is silicon-based. The DOT 4 brake fluid is also hygroscopic whereas the DOT 5 brake fluid doesn’t absorb water but offers less viscosity. DOT (Department of Transport) 4 is one of the most commonly used types of brake fluid that’s based on glycol ether. It’s pretty similar to DOT 3 brake fluid but contains borate-ester additives. Now all of the input forces normally created by squeezing the brake lever are lost as they go into compressing the air bubbles within the fluid instead. Now the brake fluid can no longer transfer these forces to the caliper leading to brake failure - this is known as 'fluid fade'. Polyethylene glycol ether is the basis for the braking fluid’s high-performance properties. Source:Oards Automotive Hub What this fluid exceeds is the dry boiling point which is at about 500 degrees and the wet boiling point which is at about 356 degrees. This is why it is used on a lot of racing applications that need this heat resistance and ability to deliver the performance when needed. DOT 5.1 Brake FluidIt seems like everyone should want to be using DOT 5 brake fluid since it has the highest boiling point and absorbs no moisture and won't react with everything else in your vehicle. And while that does make it seem good, there are some issues with it as well. Brake fluid needs to be able to withstand high temperatures and typically has a high boiling point, far above what a brake would be subject to in normal conditions.

Certainly the most commonly used brake fluid in use today, due to its wide use in the automotive industry, is DOT fluid. All DOT fluids (with the exception of DOT 5) are made up of a poly-glycol base.The fluid was a low viscosity fluid based on diluted alcohol. [11] 49% alcohol 49% distilled water 1% triethanolamine phosphate ( surfactant) 1% sodium mercaptobenzothiazole ( stenching agent) Characteristics [ edit ] Lubricant: The use of a lubricant, such as polypropylene or polythene, can increase the freedom of movement of components by 20% to 40%. Viscosity of Automotive brake fluid – viscosity table and viscosity chart:: Anton Paar Wiki". Anton Paar . Retrieved 2018-07-06. It also prevents localised corrosion of internal parts which can be caused by water pooling in the brake system. Online Browsing Platform ISO 4925:2020 - Road vehicles -- Specification of non-petroleum-base brake fluids for hydraulic systems". www.iso.org.



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