Why Shouldn't the Brake Fluid Cap Be Over-tightened?

[DelLondon]

The reason why the brake fluid cap should not be over-tightened is that excessive tightening can lead to aging and cracking of the cap over time. Below is some extended information about brake fluid: 1. General Replacement Interval: The frequency of brake fluid replacement depends on the cycle specified in the user manual. Typically, it should be replaced every 2 years or every 40,000 kilometers. 2. Precise Replacement Interval: The general interval can only serve as a reference. To determine whether the brake fluid needs replacement, a professional instrument should be used to measure its water content. If the measurement exceeds 3%, it indicates that it's time to replace the brake fluid. If it exceeds 5%, immediate replacement is necessary, as the boiling point will be significantly low by then, directly affecting the vehicle's braking performance.