Brief Analysis of HZY and DOT Standards
author: Ann
2024-08-09
The information about "national standards for brake fluid" found on the website of the National Standards Industry Association is: In January 2004, my country implemented the national mandatory product standard GB12981-2003 "Motor Vehicle Brake Fluid" which is in line with international general standards. According to GB12981-2003 "Motor Vehicle Brake Fluid", brake fluid is divided into HZY3, HZY4, and HZY5. They correspond to DOT3, DOT4, and DOT5 in the world respectively. Brake fluid has high and low levels. Consumers should choose brake fluid according to their own car model. The higher the level of brake fluid, the better the safety guarantee. In general, micro, medium and low-end cars are suitable for selecting brake fluid that meets the HZY3 standard, while medium and high-end cars are recommended to choose brake fluid that meets the HZY4 standard. Of course, there is no problem with choosing HZY4 for micro, medium and low-end cars, and it is better. Generally speaking, consumers should pay attention to three aspects when purchasing brake fluid:
First, brake fluid that is too thin cannot be used, and colorless and transparent cannot be used (generally qualified brake fluid is light yellow or dark yellow).
Second, choosing a big brand with reliable quality is also a shortcut, such as the newly launched Anno and Antu brake fluids of Great Wall Lubricants, and brake fluid products produced by domestic brands are reliable choices.
Third, don't buy too cheap ones. Generally, brake fluids within 10 yuan per liter on the market are basically inferior products. The price of qualified domestic brake fluids is usually more than 20 yuan per liter, and joint venture brands are more expensive.
The main component of brake fluid is ethylene glycol, which smells a bit like alcohol, and the component of alcohol is ethanol.
Generally speaking, as long as the brake fluid bought through a regular store is qualified, the general standards of brake fluid are DOT4 and DOT3, and the actual difference is not big.
Third, don't buy too cheap ones. Generally, brake fluids within 10 yuan per liter on the market are basically inferior products. The price of qualified domestic brake fluids is usually more than 20 yuan per liter, and joint venture brands are more expensive.
The main component of brake fluid is ethylene glycol, which smells a bit like alcohol, and the component of alcohol is ethanol.
Generally speaking, as long as the brake fluid bought through a regular store is qualified, the general standards of brake fluid are DOT4 and DOT3, and the actual difference is not big.
Lubricating oil safety data sheet
What are the application areas of grease?
