Comma BF51L Dot 5.1 Synthetic Brake Fluid, 1 Liter

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DOT 4 braking systems should be replaced every two years to ensure optimal safety and performance. When the braking system is contaminated by water, its lifespan is reduced. Ok, so now we're getting down to the nitty gritty, this is where Mineral Oil differs greatly from DOT brake fluid.

Here you can see that silicone based DOT 5 is the odd one out and is not compatible with any other DOT brake fluid. By mixing DOT 3, 4 and 5.1 brake fluids, assuming it is fresh fluid, the worst thing that can happen is a drop in the boiling point of the whole fluid. 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. But what does the DOT means? Well, this is only an abbreviation for the Department of Transportation. This is the institution that standardizes these types of fluids and makes them a standard on cars. Online Browsing Platform ISO 4925:2020 - Road vehicles -- Specification of non-petroleum-base brake fluids for hydraulic systems". www.iso.org.DOT 5 can be used as a replacement for DOT 3 and DOT 4; however, it should not be mixed with any other braking fluid. Source:gettyimages a b "ISO 4925:2005 - Road vehicles -- Specification of non-petroleum-base brake fluids for hydraulic systems". www.iso.org. It contains at least 70% by weight of a diorgano polysiloxane. [7] Unlike polyethylene glycol based fluids, DOT 5 is hydrophobic. [8] An advantage over other forms of brake fluid is that silicone has a more stable viscosity index over a wider temperature range. Another property is that it does not damage paint. [ citation needed] And what about the difference between DOT 3 and DOT 5 brake fluid? What is different between the two fluids and what are the pros and cons of each one? The following table will sum up everything discussed in this article and compare each of the braking fluids mentioned and the compatibility with each other to be mixed or not: Conclusion

Do NOT use DOT 3 in your motorcyclesince its boiling point is too low. The brake system might not work properly with DOT 3. The different numbers in brake fluid represents the different ways that these brake fluids handle temperatures. The rating refers to the fluid’s boiling points when they are either wet or dry. Brake fluid with a higher boiling point will typically last longer than one with a lower boiling point.Remember, these are only the minimum standards. Brake fluid manufacturers can and often do improve on these figures and it is possible to find DOT 4 brake fluid with a higher boiling point than some DOT 5.1 fluids on the market.