How often should I flush my brake fluid to ensure optimal performance and safety of my vehicle? Is there a recommended interval, or does it depend on specific driving conditions, such as frequent stop-and-go traffic or extreme weather? Should I be concerned about the potential degradation of brake fluid over time, or are there visible signs that indicate a necessary flush? Furthermore, is it imperative to adhere to any manufacturer guidelines concerning brake maintenance, or is it sufficient to rely on general automotive knowledge? What about the type of brake fluid being used—could this affect the frequency of flushing? Are older vehicles more susceptible to brake fluid issues, and thus require more regular maintenance? Consequently, what role does moisture accumulation play in brake performance, and how does this inform the timing of a brake fluid flush? In essence, what factors should dictate my approach to maintaining brake fluid quality for safety and reliability?