请教个brake fluid的问题

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majiaking
楼主 (文学城)

刹车油快到min level,所以警示灯时亮时灭,想加点油看看行不行。用户手册说不应该用不同牌子的,难道只能去dealer那里买刹车油?以前没注意,也不知道dealer到底用的什么牌子。谢谢啦。

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chinomango
盖子上有,不需要原厂的
老金工
里程上去的车,刹车油里面多多少少水分增加了,效率下降,换新的(原厂油)比较好;同理方向机油也逐步变质。
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soccer88
Manual上有,现在常见的有DOT 3, DOT 4, DOT 5 and DOT 5.1,
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Oneshotkill
搞不清楚就最好不要加,刹车液低到这个份,说明有闸皮可能磨得差不多了,换个皮换个液又能满血复活好多年!
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Oneshotkill
如果是漏那得修,顺便说一句,刹车油含水分和驾驶里程不。成。比。例。关系,也即里程不是换液的依据!
老金工
Sth must be related, time/mileage/or whatever...

the average motorist who drives 10,000 to 15,000 miles a year uses ... the brake fluid in the average vehicle may contain as much as two percent water. After 18 months, the level of contamination can be as high as three percent. ... Brand new DOT 3 brake fluid must have a dry (no moisture) boiling point of at ...

e.g.,Chevrolet calls for a brake fluid change on most models every 45,000 miles, but Honda says to do it every three years regardless of the vehicle’s mileage. Three years is also the recommended interval for most Volkswagens, but Mercedes-Benz vehicles typically call for fresh fluid every two years or 20,000 miles. In contrast, on the Ford Escape, Hyundai Elantra, Toyota Camry and other models from those manufacturers, there are no recommendations for replacing the brake fluid, only instructions to inspect it periodically.

This leaves it up to the owner to consult what the manufacturer says in their car’s maintenance schedule and rely on the advice of a trusted repair shop.

Brake fluid lives in a sealed system and can survive for years, but moisture from the surrounding air can work its way in through hoses and other parts of the brake system. If your brake fluid has become dirty or contaminated, it can change how your brake system operates — brake pedal feel can be affected, as can heat dissipation in repeated stops. Water in the brake lines lowers the boiling point of the fluid, so stopping ability can diminish in hard stops as heat in the system increases. In addition, over time the moisture can cause internal corrosion in the brake lines, calipers, the master cylinder and other components.

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Oneshotkill
制动液吸水特性和时间有关,开封的制动液即使密封再好能放多久呢? 具有制动液保养提示功能车辆见过的液都是”只“按时间重置
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Oneshotkill
Wiki上有制动液化学性能的详细介绍,看看它的吸水性是天然居然有还是和驾驶里程有关。
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Oneshotkill
也顺便说一下,启动马达老化磨损和驾驶里程没有关系,也即驾驶里程不是启动马达磨损的前提是一个道理。
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Oneshotkill
对事不对人,只是澄清一些概念而已,如有谬误可以指正。
落城一哥
学习了大佬们讨论的刹车油(水分)跟里程及时间的关系
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iGarage
赞同,刹车油下降,首先一个是检查刹车皮是否磨得差不多了
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Oneshotkill
Wiki上有制动液化学性能的详细介绍,看看它的吸水性是天然特性还是和驾驶使用里程有关。
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xiangbuming
刹车油必须换,我有教训
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MoonRiverMe
你自己不会直接去问dealer 用啥牌子?打个电话能要了你一个子儿?倒宁愿上来问公问婆的

公说公有理婆说婆有理,你自个儿又不懂你敢信谁?

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majiaking
先谢谢楼上给出建议的朋友,顺便回答一下最后这个问题

周末dealer不上班好吧,这跟花钱多少有关系么?你不回答也就算了,什么毛病这是。

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MoonRiverMe
连三岁小孩都知道该问谁, Is Sunday last day of your life?

这么愚蠢的问题值得去回答?

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majiaking
有病吧你

上来问问题就是因为你只能活一天了?什么SB逻辑