At What Moisture Content Should Brake Fluid Be Replaced?

1 Answers
StJayla
07/25/25 5:07pm
Generally, brake fluid should be replaced when its moisture content reaches 2.5%. Below is some information about brake fluid moisture content: 1. The moisture content in brake fluid is a critical indicator for determining whether it needs replacement. When the moisture content reaches a certain level, high temperatures can cause the water to evaporate and vaporize, forming vapor pockets in the brake lines. This can lead to sluggish, delayed, or even failed braking. 2. Typically, brake fluid requires replacement when its moisture content reaches 2.5%. Therefore, testing the moisture content or the boiling point of the brake fluid is an effective method to determine if replacement is necessary.
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