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Old 09-04-2021, 01:36 AM   #9
humfrz
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Quote:
Originally Posted by soundman98 View Post
rule of thumb for next time. brake fluid doesn't evaporate. it's hydroscopic, meaning it absorbs water, which lowers it's boiling point, and makes for a spongy pedal.

so if it's low, either it's time to change pads, or you have a leak.

either way, it's rarely worth topping off before investigating, as if you have a leak, you'll need to purge the system anyways to correct the leak, and if the pads are low, the level will go back up when you change the pads.
What is the difference between Hydroscopic and hygroscopic?

Hydroscopic has to do with viewing objects below the surface of water, for instance by means of an instrument (a hydroscope). Hygroscopic has to do with the ability of a substance to absorb water.



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