A visual guide depicting the typical hues of hydraulic brake fluid, ranging from clear or light yellow when fresh to darker amber and brown as it ages and absorbs moisture, serves as a quick reference for assessing fluid condition. For instance, a dark brown hue often signifies severely degraded fluid requiring immediate replacement.
Regular assessment of hydraulic fluid condition is vital for maintaining safe braking systems. Visual inspection using a color guide provides a readily accessible, preliminary method for gauging fluid quality, potentially preventing brake failure due to moisture contamination. This practice has become increasingly important with the advent of modern braking systems and their increasing reliance on properly functioning hydraulic fluid. While not a replacement for more thorough testing methods, it serves as a crucial first step in preventative maintenance.