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DOT 3
Jan 04, 2018

DOT 3 is one of several designations of automotive brake fluid, denoting a particular mixture of chemicals imparting specified ranges of boiling point.

In the United States, all brake fluids must meet  Standard No. 116; Motor vehicle brake fluid. Under this standard there are four Department of Transportation (DOT) minimal specifications for brake fluid. They are DOT 3, DOT 4DOT 5 and DOT 5.1.

DOT 3, like DOT 4 and DOT 5.1, is a polyethylene glycol-based fluid (contrasted with DOT 5, which is silicone-based). Fluids such as DOT 3 are hygroscopic and will absorb water from the atmosphere. This degrades the fluid's performance, and if allowed to accumulate over a period of time, can drastically reduce its boiling point. In a passenger car this is not much of an issue, but can be of serious concern in police vehicles, racecars or motorcycles.

DOT3 has been all but replaced with the superior DOT4 as there is little cost difference between the two.

恒安3000 500g.jpg

Jan. 4th, 2018

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    Add:NO.6 Hengtong Avenue, Economic and Technological Development Zone, Qixia District, Nanjing City, Jiangsu Province
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