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Just found out that brake fluid absorbs moisture through the rubber lines
I always knew brake fluid was hygroscopic but I didn't realize it could pull water right through the brake hoses themselves. Read it in a technical bulletin from ATE last week and it blew my mind. That means even a sealed system can get contaminated if you live somewhere humid like I do in Florida. Has anyone else seen corrosion inside calipers from this?
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irisw7328d ago
Learned that lesson the hard way myself a few years back. Pulled a caliper off my old Civic and found the piston was all pitted and crusty like a bad orange peel. Guessing that moisture creep is why my brake fluid always looked like weak iced tea after a year in Georgia humidity.
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skyler_kim1528d ago
Yeah that "weak iced tea" description is spot on. I actually read something from a brake tech forum a while back where they were talking about how brake fluid basically works like a sponge. It absorbs moisture from the air over time, especially in humid climates like Georgia. That's why they always say to flush it every couple years. The moisture not only messes with the boiling point and gives you that spongy pedal feel, but it also causes the corrosion you saw on that piston.
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